diff --git a/img/Higgs mechanism.webp b/img/Higgs mechanism.webp
index 9edf37b..4d7c71f 100644
Binary files a/img/Higgs mechanism.webp and b/img/Higgs mechanism.webp differ
diff --git a/img/Newtons 1st law.webp b/img/Newtons 1st law.webp
index 28dc360..82cf970 100644
Binary files a/img/Newtons 1st law.webp and b/img/Newtons 1st law.webp differ
diff --git a/img/Newtons 2nd law.webp b/img/Newtons 2nd law.webp
index 478236d..eb17dfe 100644
Binary files a/img/Newtons 2nd law.webp and b/img/Newtons 2nd law.webp differ
diff --git a/img/desublimated ammunition.webp b/img/desublimated ammunition.webp
index fab54cf..541e2a1 100644
Binary files a/img/desublimated ammunition.webp and b/img/desublimated ammunition.webp differ
diff --git a/img/field/field emitter22.webp b/img/field/field emitter22.webp
new file mode 100644
index 0000000..9c0e8a1
Binary files /dev/null and b/img/field/field emitter22.webp differ
diff --git a/img/field/field emitter23.webp b/img/field/field emitter23.webp
new file mode 100644
index 0000000..72adb69
Binary files /dev/null and b/img/field/field emitter23.webp differ
diff --git a/img/field/field emitter24.webp b/img/field/field emitter24.webp
new file mode 100644
index 0000000..9634dcb
Binary files /dev/null and b/img/field/field emitter24.webp differ
diff --git a/img/integrated armament.webp b/img/integrated armament.webp
index b876da6..53dbad2 100644
Binary files a/img/integrated armament.webp and b/img/integrated armament.webp differ
diff --git a/img/mechatronics.webp b/img/mechatronics.webp
new file mode 100644
index 0000000..37d69f4
Binary files /dev/null and b/img/mechatronics.webp differ
diff --git a/img/regression.webp b/img/regression.webp
index 872bc5c..da119ef 100644
Binary files a/img/regression.webp and b/img/regression.webp differ
diff --git a/img/simulated annealing.webp b/img/simulated annealing.webp
index fbce888..bfc1ef4 100644
Binary files a/img/simulated annealing.webp and b/img/simulated annealing.webp differ
diff --git a/index.html b/index.html
index 58e7192..ecc9d7f 100644
--- a/index.html
+++ b/index.html
@@ -58,6 +58,12 @@
                         <option value="6">why ⚇</option>
                     </select>
                     <br>
+                    <input onclick="build.showImages('settings')" type="checkbox" id="hide-images" name="hide-images" style="width:17px; height:17px;">
+                    <label for="hide-images" title="hide images for fields, guns, and tech">hide images</label>
+                    <br>
+                    <input onclick="build.hideHUD('settings')" type="checkbox" id="hide-hud" name="hide-hud" style="width:17px; height:17px;">
+                    <label for="hide-hud" title="hide: tech, defense, damage, in game console">minimal HUD</label>
+                    <br>
                     <label for="fps-select" title="use this to slow the game down">limit frames per second:</label>
                     <select name="fps-select" id="fps-select">
                         <option value="max" selected>no cap</option>
@@ -67,33 +73,6 @@
                         <option value="30">30 fps</option>
                     </select>
                     <br>
-                    <label for="classic-select" title="play older versions of n-gon">classic n-gon:</label>
-                    <select name="classic-select" id="classic-select" onChange="window.location.href=this.value">
-                        <option value="https://scratch.mit.edu/projects/14005697/fullscreen/">mech: 2014</option>
-                        <option value="https://scratch.mit.edu/projects/22573757/fullscreen/">spacetime: 2015</option>
-                        <option value="https://scratch.mit.edu/projects/41429974/fullscreen/">ballistics: 2015</option>
-                        <option value="https://scratch.mit.edu/projects/43690666/fullscreen/">portal: 2016</option>
-                        <option value="https://codepen.io/lilgreenland/full/ozXNWZ">side scroller: 2016</option>
-                        <option value="https://codepen.io/lilgreenland/full/wzARJY">side scroller: 2016</option>
-                        <option value="classic/7-1-2017/">LandGame: 2017</option>
-                        <option value="classic/4-15-2018/">n-gon: 2018</option>
-                        <option value="classic/7-11-2019/">n-gon: summer-2019</option>
-                        <option value="classic/9-8-2019/">n-gon: fall-2019</option>
-                        <option value="classic/7-15-2020/">n-gon: summer-2020</option>
-                        <option value="classic/6-1-2021/">n-gon: spring-2021</option>
-                        <option value="classic/11-1-2022/">n-gon: fall-2022</option>
-                        <option value="" selected>current version</option>
-                    </select>
-                    <br>
-                    <label for="seed" title="the randoms seed determines level order, tech choices, and mob types">randomization seed:</label>
-                    <input type="text" id="seed" name="seed" autocomplete="off" spellcheck="false" minlength="1" style="width: 120px;">
-                    <br>
-                    <span id="previous-seed" style="color:#bbb"></span>
-                    <input onclick="build.showImages('settings')" type="checkbox" id="hide-images" name="hide-images" style="width:17px; height:17px;">
-                    <label for="hide-images" title="hide images for fields, guns, and tech">hide images</label>
-                    <br>
-                    <input onclick="build.hideHUD('settings')" type="checkbox" id="hide-hud" name="hide-hud" style="width:17px; height:17px;">
-                    <label for="hide-hud" title="hide: tech, defense, damage, in game console">minimal HUD</label>
                     <br>
                     <input type="checkbox" id="community-maps" name="community-maps" style="width:17px; height:17px;">
                     <label for="community-maps" title="add about 12 player made levels the random n-gon level pool">community maps</label>
@@ -145,6 +124,28 @@
                         <option value="temple">
                         <option value="run">
                     </datalist> -->
+                    <br>
+                    <label for="classic-select" title="play older versions of n-gon">classic n-gon:</label>
+                    <select name="classic-select" id="classic-select" onChange="window.location.href=this.value">
+                        <option value="https://scratch.mit.edu/projects/14005697/fullscreen/">mech: 2014</option>
+                        <option value="https://scratch.mit.edu/projects/22573757/fullscreen/">spacetime: 2015</option>
+                        <option value="https://scratch.mit.edu/projects/41429974/fullscreen/">ballistics: 2015</option>
+                        <option value="https://scratch.mit.edu/projects/43690666/fullscreen/">portal: 2016</option>
+                        <option value="https://codepen.io/lilgreenland/full/ozXNWZ">side scroller: 2016</option>
+                        <option value="https://codepen.io/lilgreenland/full/wzARJY">side scroller: 2016</option>
+                        <option value="classic/7-1-2017/">LandGame: 2017</option>
+                        <option value="classic/4-15-2018/">n-gon: 2018</option>
+                        <option value="classic/7-11-2019/">n-gon: summer-2019</option>
+                        <option value="classic/9-8-2019/">n-gon: fall-2019</option>
+                        <option value="classic/7-15-2020/">n-gon: summer-2020</option>
+                        <option value="classic/6-1-2021/">n-gon: spring-2021</option>
+                        <option value="classic/11-1-2022/">n-gon: fall-2022</option>
+                        <option value="" selected>current version</option>
+                    </select>
+                    <br>
+                    <label for="seed" title="the randoms seed determines level order, tech choices, and mob types">randomization seed:</label>
+                    <input type="text" id="seed" name="seed" autocomplete="off" spellcheck="false" minlength="1" style="width: 120px;">
+                    <br><span id="previous-seed" style="color:#bbb"></span>
                 </div>
             </details>
         </div>
diff --git a/js/engine.js b/js/engine.js
index 2d53914..80b94bc 100644
--- a/js/engine.js
+++ b/js/engine.js
@@ -268,7 +268,7 @@ function collisionChecks(event) {
                                 if (tech.blockDmg) { //electricity
                                     Matter.Body.setVelocity(mob[k], { x: 0.5 * mob[k].velocity.x, y: 0.5 * mob[k].velocity.y });
                                     if (tech.isBlockRadiation && !mob[k].isShielded && !mob[k].isMobBullet) {
-                                        mobs.statusDoT(mob[k], tech.blockDmg * m.dmgScale * 4 / 12, 360) //200% increase -> x (1+2) //over 7s -> 360/30 = 12 half seconds -> 3/12
+                                        mobs.statusDoT(mob[k], tech.blockDmg * 0.42, 180) //200% increase -> x (1+2) //over 7s -> 360/30 = 12 half seconds -> 3/12
                                     } else {
                                         mob[k].damage(tech.blockDmg * m.dmgScale)
                                         simulation.drawList.push({
diff --git a/js/index.js b/js/index.js
index e1cc1eb..58adc99 100644
--- a/js/index.js
+++ b/js/index.js
@@ -336,6 +336,25 @@ const build = {
     },
     pauseGrid() {
         // build.pixelDraw();
+
+        build.generatePauseLeft() //makes the left side of the pause menu with the tech
+        build.generatePauseRight() //makes the right side of the pause menu with the tech
+
+        document.getElementById("tech").style.display = "none"
+        document.getElementById("guns").style.display = "none"
+        document.getElementById("field").style.display = "none"
+        document.getElementById("health").style.display = "none"
+        document.getElementById("health-bg").style.display = "none"
+        document.getElementById("defense-bar").style.display = "none"
+        document.getElementById("damage-bar").style.display = "none"
+
+
+        //show in game console
+        // document.getElementById("text-log").style.display = "inline"
+        simulation.lastLogTime = m.cycle //hide in game console
+
+    },
+    generatePauseLeft() {
         //used for junk estimation
         let junkCount = 0
         let totalCount = 1 //start at one to avoid NaN issues
@@ -358,17 +377,19 @@ const build = {
 
         let text = `<div class="pause-grid-module" style = "padding: 10px; line-height: 110%;">
 <span style = "font-size: 0.87em;">
-<svg class="SVG-button" onclick="build.shareURL(false)" width="92" height="20" style="padding:0px; margin: 1px;">
-    <g stroke='none' fill='#333' stroke-width="2" font-size="14px" font-family="Ariel, sans-serif"> <text x="5" y="15">copy build url</text></g>
-</svg><span style="font-size:1.5em;font-weight: 600; float: right;">PAUSED</span> 
-<br>
-<input onclick="build.showImages('pause')" type="checkbox" id="hide-images-pause" name="hide-images-pause" ${localSettings.isHideImages ? "checked" : ""}>
-<label for="hide-images-pause" title="hide images for fields, guns, and tech" style="font-size:1.3em;" >hide images</label>
+<span style="font-size:1.5em;font-weight: 600; float: left;">PAUSED</span> 
 <span style="float: right;">press ${input.key.pause} to resume</span>
 <br>
-<input onclick="build.hideHUD('settings')" type="checkbox" id="hide-hud" name="hide-hud" ${localSettings.isHideHUD ? "checked" : ""}>
-<label for="hide-hud" title="hide: tech, defense, damage, in game console" style="font-size:1.3em;">minimal HUD</label>
 <br>
+<button onclick="build.shareURL(false)" class='sort-button' style="font-size:1em;float: right;">copy build url</button>
+
+<input onclick="build.showImages('pause')" type="checkbox" id="hide-images-pause" name="hide-images-pause" ${localSettings.isHideImages ? "checked" : ""}>
+<label for="hide-images-pause" title="hide images for fields, guns, and tech" style="font-size:1.15em;" >hide images</label>
+<br>
+<input onclick="build.hideHUD('settings')" type="checkbox" id="hide-hud" name="hide-hud" ${localSettings.isHideHUD ? "checked" : ""}>
+<label for="hide-hud" title="hide: tech, defense, damage, in game console" style="font-size:1.15em;">minimal HUD</label>
+<br>
+
 <br><strong class='color-d'>damage</strong>: ${((tech.damageFromTech())).toPrecision(4)} &nbsp; &nbsp; difficulty: ${((m.dmgScale)).toPrecision(4)}
 <br><strong class='color-defense'>defense</strong>: ${tech.isEnergyHealth ? (1 - Math.pow(m.defense(), 0.13)).toPrecision(5) : (1 - m.defense()).toPrecision(5)} &nbsp; &nbsp; difficulty: ${(1 / simulation.dmgScale).toPrecision(4)}
 <br><strong><em>fire rate</em></strong>: ${((1 - b.fireCDscale) * 100).toFixed(b.fireCDscale < 0.1 ? 2 : 0)}%
@@ -395,15 +416,15 @@ ${simulation.isCheating ? "<br><br><em>lore disabled</em>" : ""}
         if (tech.isPauseSwitchField && !simulation.isChoosing) {
             const style = localSettings.isHideImages ? `style="height:auto;"` : `style="background-image: url('img/field/${m.fieldUpgrades[m.fieldMode].name}${m.fieldMode === 0 ? m.fieldUpgrades[0].imageNumber : ""}.webp');"`
             text += `<div class="pause-grid-module card-background" id ="pause-field" ${style} >
-                    <div class="card-text" style = "animation: fieldColorCycle 1s linear infinite alternate;">
-                    <div class="grid-title"><div class="circle-grid field"></div> &nbsp; ${build.nameLink(m.fieldUpgrades[m.fieldMode].name)}</div>
-                    ${m.fieldUpgrades[m.fieldMode].description}</div> </div>`
+                           <div class="card-text" style = "animation: fieldColorCycle 1s linear infinite alternate;">
+                           <div class="grid-title"><div class="circle-grid field"></div> &nbsp; ${build.nameLink(m.fieldUpgrades[m.fieldMode].name)}</div>
+                           ${m.fieldUpgrades[m.fieldMode].description}</div> </div>`
         } else {
             const style = localSettings.isHideImages ? `style="height:auto;"` : `style="background-image: url('img/field/${m.fieldUpgrades[m.fieldMode].name}${m.fieldMode === 0 ? m.fieldUpgrades[0].imageNumber : ""}.webp');"`
             text += `<div class="pause-grid-module card-background" id ="pause-field" ${style} >
-                    <div class="card-text">
-                    <div class="grid-title"><div class="circle-grid field"></div> &nbsp; ${build.nameLink(m.fieldUpgrades[m.fieldMode].name)}</div>
-                    ${m.fieldUpgrades[m.fieldMode].description}</div> </div>`
+                           <div class="card-text">
+                           <div class="grid-title"><div class="circle-grid field"></div> &nbsp; ${build.nameLink(m.fieldUpgrades[m.fieldMode].name)}</div>
+                           ${m.fieldUpgrades[m.fieldMode].description}</div> </div>`
         }
         // for (let i = 0, len = b.inventory.length; i < len; i++) {
         //     text += `<div class="pause-grid-module"><div class="grid-title"><div class="circle-grid gun"></div> &nbsp; ${build.nameLink(b.guns[b.inventory[i]].name)} - <span style="font-size:100%;font-weight: 100;">${b.guns[b.inventory[i]].ammo}</span></div> ${b.guns[b.inventory[i]].description}</div>`
@@ -411,16 +432,34 @@ ${simulation.isCheating ? "<br><br><em>lore disabled</em>" : ""}
         for (let i = 0, len = b.inventory.length; i < len; i++) {
             const style = localSettings.isHideImages ? `style="height:auto;"` : `style="background-image: url('img/gun/${b.guns[b.inventory[i]].name}.webp');"`
             text += `<div class="pause-grid-module card-background" ${style} >
-                    <div class="card-text">
-                    <div class="grid-title"><div class="circle-grid gun"></div> &nbsp; ${build.nameLink(b.guns[b.inventory[i]].name)} - <span style="font-size:100%;font-weight: 100;">${b.guns[b.inventory[i]].ammo}</span></div>
-                    ${b.guns[b.inventory[i]].description}</div> </div>`
+                           <div class="card-text">
+                           <div class="grid-title"><div class="circle-grid gun"></div> &nbsp; ${build.nameLink(b.guns[b.inventory[i]].name)} - <span style="font-size:100%;font-weight: 100;">${b.guns[b.inventory[i]].ammo}</span></div>
+                           ${b.guns[b.inventory[i]].description}</div> </div>`
         }
         if (!localSettings.isHideHUD) text += `<div class="pause-grid-module pause-console" style = "background-color: rgba(255,255,255,0.3);">${document.getElementById("text-log").innerHTML}</div>` //show last in game console message
         let el = document.getElementById("pause-grid-left")
         el.style.display = "grid"
         el.innerHTML = text
+    },
+    generatePauseRight() {
         //right side
-        text = "";
+        // <input onclick="" type="checkbox" id="sort-damage" name="sort-damage" style="width:1em; height:1em;">
+        //       <label for="sort-damage" title="sort tech by damage"><strong class='color-d'>damage</strong></label>
+
+        //       <input onclick="build.sortTech('guntech')" type="checkbox" id="sort-guntech" name="sort-guntech" style="width:1em; height:1em;">
+        //       <label for="sort-guntech" title="sort guntech"> <strong class='color-g'>gun</strong><strong class='color-m'>tech</strong></label>
+
+        // <button onclick="build.sortTech('bot')" class='sort-button'><strong class='color-bot'>bot</strong></button>
+        let text = `<div class="sort">
+<button onclick="build.sortTech('damage')" class='sort-button'><strong class='color-d'>damage</strong></button>
+<button onclick="build.sortTech('guntech')" class='sort-button'><strong class='color-g'>gun</strong><strong class='color-m'>tech</strong></button>
+<button onclick="build.sortTech('fieldtech')" class='sort-button'><strong class='color-f'>field</strong><strong class='color-m'>tech</strong></button>
+<button onclick="build.sortTech('heal')" class='sort-button'><strong class='color-h'>heal</strong></button>
+<button onclick="build.sortTech('defense')" class='sort-button'><strong style="letter-spacing: 1px;font-weight: 100;">defense</strong></button>
+<button onclick="build.sortTech('energy')" class='sort-button'><strong class='color-f'>energy</strong></button>
+<input type="search" id="sort-input" style="width: 8em;font-size: 0.6em;color:#888;" placeholder="sort by"/>
+<button onclick="build.sortTech('input')" class='sort-button' style="border-radius: 0em;border: 1.5px #000 solid;font-size: 0.6em;" value="damage">sort</button>
+</div>`;
         // const style = (tech.isPauseEjectTech && !simulation.isChoosing) ? 'style="animation: techColorCycle 1s linear infinite alternate;"' : ''
         const ejectClass = (tech.isPauseEjectTech && !simulation.isChoosing) ? 'pause-eject' : ''
         for (let i = 0, len = tech.tech.length; i < len; i++) {
@@ -470,23 +509,55 @@ ${simulation.isCheating ? "<br><br><em>lore disabled</em>" : ""}
                 text += `<div class="pause-grid-module" style="text-decoration: line-through; padding-left: 8px; opacity: 0.4;"><div class="grid-title">${tech.tech[i].link}</div>${tech.tech[i].descriptionFunction ? tech.tech[i].descriptionFunction() : tech.tech[i].description}</div></div>`
             }
         }
-        el = document.getElementById("pause-grid-right")
+        const el = document.getElementById("pause-grid-right")
         el.style.display = "grid"
         el.innerHTML = text
+    },
+    sortTech(find) {
+        const sortKeyword = (a, b) => {
+            let aHasKeyword = (a.descriptionFunction ? a.descriptionFunction() : a.description).includes(find) || a.name.includes(find)
+            let bHasKeyword = (b.descriptionFunction ? b.descriptionFunction() : b.description).includes(find) || b.name.includes(find)
+            if ((aHasKeyword) && !bHasKeyword) return -1;
+            if (!aHasKeyword && bHasKeyword) return 1;
+            return 0;
+        }
 
-        document.getElementById("tech").style.display = "none"
-        document.getElementById("guns").style.display = "none"
-        document.getElementById("field").style.display = "none"
-        document.getElementById("health").style.display = "none"
-        document.getElementById("health-bg").style.display = "none"
-        document.getElementById("defense-bar").style.display = "none"
-        document.getElementById("damage-bar").style.display = "none"
-
-
-        //show in game console
-        // document.getElementById("text-log").style.display = "inline"
-        simulation.lastLogTime = m.cycle //hide in game console
-
+        if (find === 'guntech') {
+            tech.tech.sort((a, b) => {
+                if (a.isGunTech && !b.isGunTech) return -1; //sort to the top
+                if (!a.isGunTech && b.isGunTech) return 1; //sort to the bottom
+                return 0;
+            });
+        } else if (find === 'fieldtech') {
+            tech.tech.sort((a, b) => {
+                if (a.isFieldTech && !b.isFieldTech) return -1; //sort to the top
+                if (!a.isFieldTech && b.isFieldTech) return 1; //sort to the bottom
+                return 0;
+            });
+        } else if (find === 'damage') {
+            tech.tech.sort(sortKeyword);
+        } else if (find === 'defense') {
+            tech.tech.sort(sortKeyword);
+        } else if (find === 'energy') {
+            tech.tech.sort(sortKeyword);
+        } else if (find === 'heal') {
+            tech.tech.sort((a, b) => {
+                if (a.isHealTech && !b.isHealTech) return -1; //sort to the top
+                if (!a.isHealTech && b.isHealTech) return 1; //sort to the bottom
+                return 0;
+            });
+        } else if (find === 'bot') {
+            tech.tech.sort((a, b) => {
+                if (a.isBotTech && !b.isBotTech) return -1; //sort to the top
+                if (!a.isBotTech && b.isBotTech) return 1; //sort to the bottom
+                return 0;
+            });
+        } else if (find === 'input') {
+            find = document.getElementById("sort-input").value;
+            tech.tech.sort(sortKeyword);
+        }
+        build.generatePauseRight() //makes the right side of the pause menu with the tech
+        document.getElementById("sort-input").value = find; //make the sorted string display in the keyword search input field
     },
     unPauseGrid() {
         document.getElementById("guns").style.display = "inline"
@@ -1158,7 +1229,7 @@ window.addEventListener("keydown", function (event) {
             }
             break
         case input.key.testing:
-            if (m.alive && localSettings.loreCount > 0) {
+            if (m.alive && localSettings.loreCount > 0 && !simulation.paused) {
                 if (simulation.difficultyMode > 4) {
                     simulation.makeTextLog("<em>testing mode disabled for this difficulty</em>");
                     break
diff --git a/js/level.js b/js/level.js
index 8a9c4be..8188210 100644
--- a/js/level.js
+++ b/js/level.js
@@ -27,24 +27,26 @@ const level = {
             // m.immuneCycle = Infinity //you can't take damage
             // tech.tech[297].frequency = 100
             // m.couplingChange(10)
-            // m.setField("negative mass") //1 standing wave  2 perfect diamagnetism  3 negative mass  4 molecular assembler  5 plasma torch  6 time dilation  7 metamaterial cloaking  8 pilot wave  9 wormhole
+            // m.setField("standing wave") //1 standing wave  2 perfect diamagnetism  3 negative mass  4 molecular assembler  5 plasma torch  6 time dilation  7 metamaterial cloaking  8 pilot wave  9 wormhole
             // m.energy = 0
             // simulation.molecularMode = 2
             // m.damage(0.1);
             // b.giveGuns("nail gun") //0 nail gun  1 shotgun  2 super balls 3 wave 4 missiles 5 grenades  6 spores  7 drones  8 foam  9 harpoon  10 mine  11 laser
             // b.giveGuns("shotgun") //0 nail gun  1 shotgun  2 super balls 3 wave 4 missiles 5 grenades  6 spores  7 drones  8 foam  9 harpoon  10 mine  11 laser
             // b.guns[3].ammo = 100000000
-            // tech.giveTech("accretion")
-            // tech.giveTech("surface plasmons")
+            // tech.giveTech("bremsstrahlung")
+            // tech.giveTech("cherenkov radiation")
+            // tech.giveTech("irradiated nails")
             // for (let i = 0; i < 6; ++i) tech.giveTech("Lorentz transformation")
-            // for (let i = 0; i < 1; ++i) tech.giveTech("waste heat recovery")
+            // for (let i = 0; i < 1; ++i) tech.giveTech("rivet gun")
             // requestAnimationFrame(() => { for (let i = 0; i < 1; i++) tech.giveTech("foam-bot") });
             // for (let i = 0; i < 1; i++) tech.giveTech("foam-bot upgrade")
-            // for (let i = 0; i < 1; ++i) tech.giveTech("flatland")
+            // for (let i = 0; i < 1; ++i) tech.giveTech("ternary")
+            // for (let i = 0; i < 3; ++i) tech.giveTech("mechatronics")
             // for (let i = 0; i < 3; i++) powerUps.directSpawn(450, -50, "tech");
             // for (let i = 0; i < 10; i++) powerUps.directSpawn(1750, -500, "research");
             // for (let i = 0; i < 10; i++) powerUps.directSpawn(1750, -500, "coupling");
-            // level.subway();
+            // level.testing();
             // spawn.nodeGroup(3200, -300, "sniper")
             // spawn.nodeGroup(2200, -300, "sniper")
             // spawn.nodeGroup(2200, -300, "sniper")
@@ -1850,100 +1852,6 @@ const level = {
     testing() {
         simulation.enableConstructMode() //tech.giveTech('motion sickness')  //used to build maps in testing mode
 
-        //clipping everything except LoS
-        //stroke around map
-        // simulation.ephemera.push({
-        //     name: "LoS", count: 0, do() {
-        //         const pos = m.pos
-        //         const radius = 5000
-        //         if (!simulation.isTimeSkipping) {
-        //             const vertices = simulation.sight.circleLoS(pos, radius);
-        //             if (vertices.length) {
-        //                 ctx.beginPath();
-        //                 ctx.moveTo(vertices[0].x, vertices[0].y);
-        //                 for (var i = 1; i < vertices.length; i++) {
-        //                     var currentDistance = Math.sqrt((vertices[i - 1].x - pos.x) ** 2 + (vertices[i - 1].y - pos.y) ** 2);
-        //                     var newDistance = Math.sqrt((vertices[i].x - pos.x) ** 2 + (vertices[i].y - pos.y) ** 2);
-        //                     if (Math.abs(currentDistance - radius) < 1 && Math.abs(newDistance - radius) < 1) {
-        //                         const currentAngle = Math.atan2(vertices[i - 1].y - pos.y, vertices[i - 1].x - pos.x);
-        //                         const newAngle = Math.atan2(vertices[i].y - pos.y, vertices[i].x - pos.x);
-        //                         ctx.arc(pos.x, pos.y, radius, currentAngle, newAngle);
-        //                     } else {
-        //                         ctx.lineTo(vertices[i].x, vertices[i].y)
-        //                     }
-        //                 }
-        //                 newDistance = Math.sqrt((vertices[0].x - pos.x) ** 2 + (vertices[0].y - pos.y) ** 2);
-        //                 currentDistance = Math.sqrt((vertices[vertices.length - 1].x - pos.x) ** 2 + (vertices[vertices.length - 1].y - pos.y) ** 2);
-        //                 if (Math.abs(currentDistance - radius) < 1 && Math.abs(newDistance - radius) < 1) {
-        //                     const currentAngle = Math.atan2(vertices[vertices.length - 1].y - pos.y, vertices[vertices.length - 1].x - pos.x);
-        //                     const newAngle = Math.atan2(vertices[0].y - pos.y, vertices[0].x - pos.x);
-        //                     ctx.arc(pos.x, pos.y, radius, currentAngle, newAngle);
-        //                 } else {
-        //                     ctx.lineTo(vertices[0].x, vertices[0].y)
-        //                 }
-        //                 ctx.strokeStyle = "#000";
-        //                 ctx.lineWidth = 20;
-        //                 ctx.stroke(simulation.draw.mapPath);
-        //                 ctx.globalCompositeOperation = "destination-in";
-        //                 ctx.fillStyle = "#000";
-        //                 ctx.fill();
-        //                 ctx.globalCompositeOperation = "source-over";
-        //                 ctx.clip();
-        //             }
-        //         }
-        //     },
-        // })
-
-        //clipping everything except LoS
-        //redrawing map, so it's still visible
-        // simulation.ephemera.push({
-        //     name: "LoS", count: 0, do() {
-        //         const pos = m.pos
-        //         const radius = 3000
-        //         if (!simulation.isTimeSkipping) {
-        //             const vertices = simulation.sight.circleLoS(pos, radius);
-        //             if (vertices.length) {
-        //                 ctx.beginPath();
-        //                 ctx.moveTo(vertices[0].x, vertices[0].y);
-        //                 for (var i = 1; i < vertices.length; i++) {
-        //                     var currentDistance = Math.sqrt((vertices[i - 1].x - pos.x) ** 2 + (vertices[i - 1].y - pos.y) ** 2);
-        //                     var newDistance = Math.sqrt((vertices[i].x - pos.x) ** 2 + (vertices[i].y - pos.y) ** 2);
-        //                     if (Math.abs(currentDistance - radius) < 1 && Math.abs(newDistance - radius) < 1) {
-        //                         const currentAngle = Math.atan2(vertices[i - 1].y - pos.y, vertices[i - 1].x - pos.x);
-        //                         const newAngle = Math.atan2(vertices[i].y - pos.y, vertices[i].x - pos.x);
-        //                         ctx.arc(pos.x, pos.y, radius, currentAngle, newAngle);
-        //                     } else {
-        //                         ctx.lineTo(vertices[i].x, vertices[i].y)
-        //                     }
-        //                 }
-        //                 newDistance = Math.sqrt((vertices[0].x - pos.x) ** 2 + (vertices[0].y - pos.y) ** 2);
-        //                 currentDistance = Math.sqrt((vertices[vertices.length - 1].x - pos.x) ** 2 + (vertices[vertices.length - 1].y - pos.y) ** 2);
-        //                 if (Math.abs(currentDistance - radius) < 1 && Math.abs(newDistance - radius) < 1) {
-        //                     const currentAngle = Math.atan2(vertices[vertices.length - 1].y - pos.y, vertices[vertices.length - 1].x - pos.x);
-        //                     const newAngle = Math.atan2(vertices[0].y - pos.y, vertices[0].x - pos.x);
-        //                     ctx.arc(pos.x, pos.y, radius, currentAngle, newAngle);
-        //                 } else {
-        //                     ctx.lineTo(vertices[0].x, vertices[0].y)
-        //                 }
-
-        //                 ctx.strokeStyle = "#234";
-        //                 ctx.lineWidth = 9;
-        //                 ctx.stroke(simulation.draw.mapPath);
-
-        //                 ctx.globalCompositeOperation = "destination-in";
-        //                 ctx.fillStyle = "#000";
-        //                 ctx.fill();
-        //                 ctx.globalCompositeOperation = "source-over";
-
-        //                 // ctx.fill(simulation.draw.mapPath);
-        //                 // ctx.fillStyle = "#000";
-
-        //                 ctx.clip();
-        //             }
-        //         }
-        //     },
-        // })
-
         document.body.style.backgroundColor = "#fff";
         // color.map = "#444" //custom map color
         // level.difficultyIncrease(14); //hard mode level 7
@@ -2033,10 +1941,10 @@ const level = {
 
 
         //???
-        // level.difficultyIncrease(30) //30 is near max on hard  //60 is near max on why
+        level.difficultyIncrease(3 * 4) //30 is near max on hard  //60 is near max on why
         // m.addHealth(Infinity)
 
-        // spawn.starter(1900, -500, 200) //big boy
+        spawn.starter(1900, -500, 200) //big boy
         // for (let i = 0; i < 10; ++i) spawn.launcher(1900, -500)
         // spawn.suckerBoss(1900, -500)
         // spawn.launcherBoss(3200, -500)
diff --git a/js/mob.js b/js/mob.js
index e736aed..090b17a 100644
--- a/js/mob.js
+++ b/js/mob.js
@@ -188,7 +188,8 @@ const mobs = {
             who.status.push({
                 effect() {
                     if ((simulation.cycle - this.startCycle) % 30 === 0) {
-                        let dmg = m.dmgScale * this.dmg * tech.radioactiveDamage
+                        let dmg = m.dmgScale * tech.radioactiveDamage * this.dmg
+                        console.log(dmg)
                         who.damage(dmg);
                         if (who.damageReduction) {
                             simulation.drawList.push({ //add dmg to draw queue
diff --git a/js/player.js b/js/player.js
index dcbfbd5..21540ea 100644
--- a/js/player.js
+++ b/js/player.js
@@ -377,9 +377,9 @@ const m = {
 
         //randomize ammo based on ammo/ammoPack count
         for (let i = 0, len = b.inventory.length; i < len; i++) {
-            if (b.guns[b.inventory[i]].ammo !== Infinity) b.guns[b.inventory[i]].ammo = Math.max(0, Math.floor(ammoCount / b.inventory.length * b.guns[b.inventory[i]].ammoPack * (1.05 + 0.3 * (Math.random() - 0.5))))
+            if (b.guns[b.inventory[i]].ammo !== Infinity) b.guns[b.inventory[i]].ammo = Math.max(0, Math.floor(ammoCount / b.inventory.length * b.guns[b.inventory[i]].ammoPack * (1.15 + 0.3 * (Math.random() - 0.5))))
         }
-
+        console.log(b.activeGun)
         //randomize tech
         for (let i = 0; i < totalTech; i++) {
             //find what tech I could get
@@ -545,7 +545,7 @@ const m = {
         if (tech.isZeno) dmg *= 0.15
         if (tech.isFieldHarmReduction) dmg *= 0.5
         if (tech.isHarmMACHO) dmg *= 0.4
-        if (tech.isImmortal) dmg *= 0.67
+        if (tech.isImmortal) dmg *= 0.7
         if (tech.energyRegen === 0) dmg *= 0.34
         // if (tech.healthDrain) dmg *= 1 + 3.33 * tech.healthDrain //tech.healthDrain = 0.03 at one stack //cause more damage
         if (m.fieldMode === 0 || m.fieldMode === 3) dmg *= 0.973 ** m.coupling
@@ -2317,7 +2317,7 @@ const m = {
                     if (who.isMobBullet) {
                         who.damage(tech.blockDmg * m.dmgScale * 3, true)
                     } else {
-                        mobs.statusDoT(who, tech.blockDmg * m.dmgScale * 4 / 12, 360) //200% increase -> x (1+2) //over 7s -> 360/30 = 12 half seconds -> 3/12
+                        mobs.statusDoT(who, tech.blockDmg * 0.42, 180) //200% increase -> x (1+2) //over 7s -> 360/30 = 12 half seconds -> 3/12
                     }
                 } else {
                     who.damage(tech.blockDmg * m.dmgScale, true)
@@ -2531,7 +2531,7 @@ const m = {
     },
     fieldUpgrades: [{
         name: "field emitter",
-        imageNumber: Math.floor(Math.random() * 20),
+        imageNumber: Math.floor(Math.random() * 23),
         description: `use <strong class='color-f'>energy</strong> to <strong>deflect</strong> mobs
             <br>generate <strong>6</strong> <strong class='color-f'>energy</strong> per second`, //            <br><strong>100</strong> max <strong class='color-f'>energy</strong>
         effect: () => {
@@ -2727,7 +2727,7 @@ const m = {
                                     if (mob[i].isMobBullet) {
                                         mob[i].damage(tech.blockDmg * m.dmgScale * 3, true)
                                     } else {
-                                        mobs.statusDoT(mob[i], tech.blockDmg * m.dmgScale * 4 / 12, 360) //200% increase -> x (1+2) //over 7s -> 360/30 = 12 half seconds -> 3/12
+                                        mobs.statusDoT(mob[i], tech.blockDmg * m.dmgScale * 0.42, 180) //200% increase -> x (1+2) //over 7s -> 360/30 = 12 half seconds -> 3/12
                                     }
                                 } else {
                                     mob[i].damage(tech.blockDmg * m.dmgScale, true)
diff --git a/js/tech.js b/js/tech.js
index f6d9657..c1d7aa8 100644
--- a/js/tech.js
+++ b/js/tech.js
@@ -254,7 +254,7 @@ const tech = {
         if (tech.isSpeedDamage) dmg *= 1 + Math.min(0.66, player.speed * 0.0165)
         if (tech.isDamageAfterKillNoRegen && m.lastKillCycle + 300 > m.cycle) dmg *= 1.6
         if (tech.isAxion && tech.isHarmMACHO) dmg *= 2 - m.defense()
-        if (tech.isHarmDamage && m.lastHarmCycle + 600 > m.cycle) dmg *= 3;
+        if (tech.isHarmDamage && m.lastHarmCycle + 480 > m.cycle) dmg *= 3;
         if (tech.lastHitDamage && m.lastHit) dmg *= 1 + tech.lastHitDamage * m.lastHit * (2 - m.defense()) // if (!simulation.paused) m.lastHit = 0
         if (tech.isLowHealthDmg) dmg *= 1 + 0.7 * Math.max(0, 1 - (tech.isEnergyHealth ? m.energy : m.health))
         return dmg
@@ -757,25 +757,6 @@ const tech = {
             // }
         }
     },
-    {
-        name: "integrated armament",
-        link: `<a target="_blank" href='https://en.wikipedia.org/wiki/Weapon' class="link">integrated armament</a>`,
-        description: `<span style = 'font-size:95%;'>+<strong>25%</strong> <strong class='color-d'>damage</strong>, but new <strong class='color-g'>guns</strong><br>replace your current <strong class='color-g'>gun</strong> and convert <strong class='color-g'>gun</strong><strong class='color-m'>tech</strong></span>`,
-        maxCount: 1,
-        count: 0,
-        frequency: 1,
-        frequencyDefault: 1,
-        allowed() {
-            return b.inventory.length === 1
-        },
-        requires: "only 1 gun",
-        effect() {
-            tech.isOneGun = true;
-        },
-        remove() {
-            tech.isOneGun = false;
-        }
-    },
     {
         name: "supply chain",
         descriptionFunction() {
@@ -987,7 +968,52 @@ const tech = {
             }
         }
     },
-
+    {
+        name: "integrated armament",
+        link: `<a target="_blank" href='https://en.wikipedia.org/wiki/Weapon' class="link">integrated armament</a>`,
+        description: `<span style = 'font-size:95%;'>+<strong>25%</strong> <strong class='color-d'>damage</strong>, but new <strong class='color-g'>guns</strong> replace<br>your current <strong class='color-g'>gun</strong> and convert <strong class='color-g'>gun</strong><strong class='color-m'>tech</strong></span>`,
+        maxCount: 1,
+        count: 0,
+        frequency: 1,
+        frequencyDefault: 1,
+        allowed() {
+            return b.inventory.length === 1
+        },
+        requires: "only 1 gun",
+        effect() {
+            tech.isOneGun = true;
+        },
+        remove() {
+            tech.isOneGun = false;
+        }
+    },
+    {
+        name: "mechatronics",
+        descriptionFunction() {
+            let damageTotal = 1
+            for (let i = 0; i < this.damageSoFar.length; i++) damageTotal *= this.damageSoFar[i]
+            let currentDamage = ""
+            if (this.count) currentDamage = `<br><em>(+${(100 * (damageTotal - 1)).toFixed(0)}%)</em>`
+            return `gain between <strong>+7%</strong> and <strong>+13%</strong> <strong class='color-d'>damage</strong>` + currentDamage
+        },
+        maxCount: 9,
+        count: 0,
+        frequency: 1,
+        frequencyDefault: 1,
+        allowed() { return true },
+        requires: "",
+        damage: 1.1,
+        damageSoFar: [], //tracks the random damage upgrades so it can be removed and in descriptionFunction
+        effect() {
+            const damage = (Math.floor((Math.random() * 0.07 + 0.07 + 1) * 100)) / 100
+            tech.damage *= damage
+            this.damageSoFar.push(damage)
+        },
+        remove() {
+            for (let i = 0; i < this.damageSoFar.length; i++) tech.damage /= this.damageSoFar[i]
+            this.damageSoFar.length = 0
+        }
+    },
     // {
     //     name: "coyote",
     //     description: "",
@@ -1055,7 +1081,7 @@ const tech = {
     {
         name: "microstates",
         link: `<a target="_blank" href='https://en.wikipedia.org/wiki/Microstate_(statistical_mechanics)' class="link">microstates</a>`,
-        description: "for each active <strong>bullet / bot</strong><br><strong>+0.7%</strong> <strong class='color-d'>damage</strong>",
+        description: "for each active <strong>bullet</strong> or <strong>bot</strong><br><strong>+0.7%</strong> <strong class='color-d'>damage</strong>",
         maxCount: 1,
         count: 0,
         frequency: 1,
@@ -3166,7 +3192,7 @@ const tech = {
     },
     {
         name: "quantum immortality",
-        description: "<strong>+33%</strong> <strong class='color-defense'>defense</strong><br>after <strong>dying</strong>, continue in an <strong class='alt'>alternate reality</strong>",
+        description: "<strong>+30%</strong> <strong class='color-defense'>defense</strong><br>after <strong>dying</strong>, continue in an <strong class='alt'>alternate reality</strong>",
         maxCount: 1,
         count: 0,
         frequency: 1,
@@ -4068,7 +4094,7 @@ const tech = {
     },
     {
         name: "null hypothesis",
-        description: `<strong>+9%</strong> <strong class='color-d'>damage</strong><br><strong>removing</strong> this spawns ${powerUps.orb.research(15)}`,
+        description: `<strong>+8%</strong> <strong class='color-d'>damage</strong><br><strong>removing</strong> this spawns ${powerUps.orb.research(15)}`,
         maxCount: 1,
         count: 0,
         frequency: 1,
@@ -4078,7 +4104,7 @@ const tech = {
             return true
         },
         requires: "",
-        damage: 1.09,
+        damage: 1.08,
         effect() {
             tech.damage *= this.damage
         },
@@ -7360,7 +7386,7 @@ const tech = {
     },
     {
         name: "cherenkov radiation", //<strong>deflecting</strong> and <strong class='color-block'>blocks</strong>
-        description: "bremsstrahlung's effects are <strong class='color-p'>radioactive</strong><br><strong>+300%</strong> <strong class='color-d'>damage</strong> over <strong>6</strong> seconds",
+        description: "bremsstrahlung's effects are <strong class='color-p'>radioactive</strong><br><strong>+250%</strong> <strong class='color-d'>damage</strong> over <strong>3</strong> seconds",
         isFieldTech: true,
         maxCount: 1,
         count: 0,
@@ -7483,7 +7509,7 @@ const tech = {
     },
     {
         name: "radiative equilibrium",
-        description: "after losing <strong class='color-h'>health</strong><br><strong>+200%</strong> <strong class='color-d'>damage</strong> for <strong>10</strong> seconds",
+        description: "after losing <strong class='color-h'>health</strong><br><strong>+200%</strong> <strong class='color-d'>damage</strong> for <strong>8</strong> seconds",
         isFieldTech: true,
         maxCount: 1,
         count: 0,
diff --git a/style.css b/style.css
index 32ac370..f21783e 100644
--- a/style.css
+++ b/style.css
@@ -298,6 +298,27 @@ summary {
     font-size: 0.75em;
 }
 
+.sort {
+    padding: 0.1em 0.3em;
+    border: 1px solid #444;
+    /* min-height: 88px; */
+    line-height: 100%;
+    background-color: #fff;
+}
+
+.sort-button {
+    border: 1px #333 solid;
+    border-radius: 0.5em;
+    background-color: #fff;
+    font-size: 0.5em;
+    /* padding: 0.3em; */
+
+}
+
+.sort-button:hover {
+    background-color: #eee;
+}
+
 .pause-eject .card-text {
     animation: techColorCycle 1s linear infinite alternate;
 }
diff --git a/todo.txt b/todo.txt
index c5536ff..dd34c36 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,10 +1,21 @@
 ******************************************************** NEXT PATCH **************************************************
 
-added a random station in subway
-a few bug fixes
+pause menu can sort tech by keywords
+
+tech: mechatronics - randomly add +(7 to 13)% damage
+
+a few new images
+bug fixes
+  cherenkov radiation damage bug fixed it does much more damage and matches the description
+
 
 *********************************************************** TODO *****************************************************
 
+extend sort to experiments
+
+aperture also increases and decreases vision range
+  I think messing with vision range causes problems with the start of level vision code
+
 mob non-combat behaviors, like Rain World
   gathering
     blocks
@@ -20,6 +31,8 @@ mob non-combat behaviors, like Rain World
   play
   fight other mobs
 
+maybe reduce the fps on the line of sight graphics to make it look more like a sensor?
+
 consider increasing the base player horizontal movement
   maybe only increase ground movement, air control seems fine
 
@@ -30,6 +43,7 @@ level: subway - a map that uses the train level element and line of sight graphi
         teleport to far away rooms
       map elements that alternate between positions
       buttons and doors
+  maybe add mob mobs to each station?  this makes it faster to clear the level
   boss
     spawn at the exit station? or at a random station? or at the station before the exit?
     spawn on the station after enough mobs have been killed?
@@ -88,9 +102,6 @@ mobs attack mines
   
 rework quantum eraser
 
-test bremsstrahlung damage
-  and make sure it actually does more damage with the dot tech
-
 tech circular polarization - wave gun bullets move in a circle
 
 tech: choose next map by name after exiting current map
@@ -163,8 +174,6 @@ tech: after bosses die<br>they spawn a research
 
 tech: +8% damage each time you kill a boss
 
-tech:  maybe missiles explode when they hit walls, but explosions only drain energy
-
 tech: sticky grenades
   needs another effect to be good enough
   stick to mobs?
@@ -268,8 +277,6 @@ mob status effect - emit - mobs fire lasers for a few seconds
 Tech: "Solid rocket motor": Missiles would start at 300% speed and 200% missile damage upon explosion, but the speed and damage would decrease to 40% speed and damage as time goes on
 tech: every time shotgun fires it's a different shotgun mode:  nails, ice, needles, worms, fleas, rivets, ...  but you get more ammo
 
-try again - line of sight  https://ncase.me/sight-and-light/
-
 for tech power ups no tech options are displayed until you research once
   or display only JUNK until you research once
   increase the number of options after each research
@@ -281,8 +288,6 @@ tech increase max energy and energy to 5000, but you can no longer regen energy
 it would be nice if there was incentive to go slow when choosing tech so n-gon is more relaxing
   add some css based visual effects for opening up a tech,gun,field
 
-make freeze and __  not cause death at 50% health, but just 600% extra damage for that bullet 
-
 make a new coupling effect for perfect diamagnetism or standing wave
 
 make a faster smaller version of cell boss that also has map collisions
@@ -341,8 +346,6 @@ replace field descriptions with a function call so they can have dynamic text
 
 Boss that shoots out a ring of bullets, then after a few seconds it gravitates the bullets back
 
-JUNK: Placebo: double the power up spawn rate but make half of them do nothing
-
 coupling
   put coupling description as 4th line on field description
     raw text no function call
@@ -656,10 +659,6 @@ a mine tech that makes mines you can stand on
     or 3 seconds after you touch them
   benefits from all block tech
 
-setting to remove UI, except health bar
-  except active gun? to see ammo
-  checkbox in pause and in settings
-
 go non-collide with mobs when immune to damage?
 
 mobs that are invulnerable from the front
@@ -674,8 +673,6 @@ add anticipation to more mob attacks
 can mob bullets damage other mob?
   maybe if they switch collisions and classType === "body" or obj.classType === "bullet"
 
-path finding system
-
 figure out how to get friction effects on map/body to apply to player
 also horizontal moving platform?
 
@@ -749,9 +746,6 @@ balance time dilation with bose einstein  (you can freeze everything and take no
   code is still there, need to balance
   balance with energy drain?
 
-overflowing energy does harm?
-  or just reduces harm reduction?
-
 make a line of constrained mobs move like a snake 
   apply forces with directions determined by time and position on the snake
 
@@ -883,18 +877,6 @@ https://developer.mozilla.org/en-US/docs/Web/API/Pointer_Lock_API
 https://www.vsynctester.com/game.html
 https://news.ycombinator.com/item?id=26530272
 
-mobile requirements:
-  detect mobile, flip to landscape
-  detect no keyboard, no mouse
-    auto aim?
-    limit items to ones that don't require aiming?
-    tap screen regions to move (WASD)
-    reduce font size
-    
-add back in gamepad support?
-  but does anyone care?
-  https://github.com/landgreen/landgreen.github.io/search?q=gamepadconnected
-
 tech: time dilation - when you exit time dilation rewind to the state you entered
   position, velocity, and health
   no energy cost