diff --git a/.DS_Store b/.DS_Store
index 307961e..3befd1d 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/index.html b/index.html
index bde0b5f..9969afa 100644
--- a/index.html
+++ b/index.html
@@ -71,11 +71,13 @@
                     <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/">scratch: 2014</option>
-                        <option value="https://scratch.mit.edu/projects/22573757/fullscreen/">scratch: 2015</option>
-                        <option value="https://codepen.io/lilgreenland/full/ozXNWZ">codepen: 2016</option>
-                        <option value="https://codepen.io/lilgreenland/full/wzARJY">codepen: 2016</option>
-                        <option value="classic/7-1-2017/">n-gon: 2017</option>
+                        <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>
@@ -191,7 +193,7 @@
                             </g>
                         </svg>
                     </a>
-                    <a href="https://github.com/landgreen/n-gon">Github</a> hosts the source code for n-gon.<br> It's written in JavaScript, CSS, and HTML using the matter.js 2-D physics library.
+                    <a href="https://github.com/landgreen/n-gon">Github</a> hosts n-gon's 2.5MB source code.<br>It's written in JavaScript, CSS, and HTML and uses the matter.js 2-D physics library.
                 </div>
             </details>
         </div>
diff --git a/js/index.js b/js/index.js
index 8b14fda..f26bfa5 100644
--- a/js/index.js
+++ b/js/index.js
@@ -220,33 +220,6 @@ for (let i = 0, len = tech.tech.length; i < len; i++) {
 }
 
 const build = {
-    // onLoadPowerUps() {
-    //     const set = getUrlVars()
-    //     if (Object.keys(set).length !== 0) {
-    //         for (const property in set) {
-    //             set[property] = set[property].replace(/%20/g, " ")
-    //             if (property.substring(0, 3) === "gun") b.giveGuns(set[property])
-    //             if (property.substring(0, 3) === "tech") tech.giveTech(set[property])
-    //             if (property === "field") m.setField(set[property])
-    //             if (property === "difficulty") {
-    //                 simulation.difficultyMode = Number(set[property])
-    //                 document.getElementById("difficulty-select").value = Number(set[property])
-    //             }
-    //             if (property === "level") {
-    //                 level.levelsCleared += Number(set[property]);
-    //                 level.difficultyIncrease(Number(set[property]) * simulation.difficultyMode) //increase difficulty based on modes
-    //                 spawn.setSpawnList(); //picks a couple mobs types for a themed random mob spawns
-    //                 level.onLevel++
-    //             }
-    //         }
-    //         for (let i = 0; i < bullet.length; ++i) Matter.Composite.remove(engine.world, bullet[i]);
-    //         bullet = []; //remove any bullets that might have spawned from tech
-    //         if (b.inventory.length > 0) {
-    //             b.activeGun = b.inventory[0] //set first gun to active gun
-    //             simulation.makeGunHUD();
-    //         }
-    //     }
-    // },
     pauseGrid() {
         //left side
         let botText = ""
@@ -264,14 +237,7 @@ const build = {
 <br><br><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><br>`
-        //{ /* <strong class='color-d'>damage</strong> increase: ${((tech.damageFromTech()-1)*100).toFixed(0)}% */ }
-        // <br>damage difficulty reduction: ${((1-m.dmgScale)*100).toFixed(2)}%
-        // <br>effective damage: ${(((tech.damageFromTech()-1)*m.dmgScale)*100).toFixed(0)}%
-        // <br>
-        // <br><strong class='color-d'>damage</strong> =  ${((tech.damageFromTech())*100).toFixed(0)}% × ${((m.dmgScale)*100).toFixed(2)}% = ${(((tech.damageFromTech())*m.dmgScale)*100).toFixed(0)}%
-        /// <br>heal difficulty scale: ${(simulation.healScale*100).toFixed(1)}%
-        text +=
-            `
+        text += `
 <br>effective <strong class='color-d'>damage</strong>: ${(tech.damageFromTech() * m.dmgScale).toPrecision(4)}
 <br>damage: ${((tech.damageFromTech())).toPrecision(4)}, difficulty: ${((m.dmgScale)).toPrecision(4)}
 <br>
@@ -301,13 +267,13 @@ ${simulation.isCheating ? "<br><br><em>lore disabled</em>": ""}
 
         //right side
         text = "";
-        if (tech.isPauseSwitchField) {
+        if (tech.isPauseSwitchField && !simulation.isChoosing) {
             text += `<div class="pause-grid-module" id ="pause-field" 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>`
         } else {
             text += `<div class="pause-grid-module" id ="pause-field"><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>`
         }
 
-        const style = tech.isPauseEjectTech ? 'style="animation: techColorCycle 1s linear infinite alternate;"' : ''
+        const style = (tech.isPauseEjectTech && !simulation.isChoosing) ? 'style="animation: techColorCycle 1s linear infinite alternate;"' : ''
         for (let i = 0, len = tech.tech.length; i < len; i++) {
             if (tech.tech[i].count > 0 && !tech.tech[i].isNonRefundable) {
                 const techCountText = tech.tech[i].count > 1 ? `(${tech.tech[i].count}x)` : "";
@@ -337,11 +303,24 @@ ${simulation.isCheating ? "<br><br><em>lore disabled</em>": ""}
         el = document.getElementById("pause-grid-right")
         el.style.display = "grid"
         el.innerHTML = text
+
+        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"
     },
     unPauseGrid() {
+        document.getElementById("tech").style.display = "inline"
+        document.getElementById("guns").style.display = "inline"
+        document.getElementById("field").style.display = "inline"
+        document.getElementById("health").style.display = "inline"
+        document.getElementById("health-bg").style.display = "inline"
         // document.body.style.overflow = "hidden"
         document.getElementById("pause-grid-left").style.display = "none"
         document.getElementById("pause-grid-right").style.display = "none"
+        document.getElementById("pause-grid-right").style.opacity = "1"
+        document.getElementById("pause-grid-left").style.opacity = "1"
         window.scrollTo(0, 0);
     },
     isExperimentSelection: false,
diff --git a/js/level.js b/js/level.js
index a200d76..28d7292 100644
--- a/js/level.js
+++ b/js/level.js
@@ -16,16 +16,16 @@ const level = {
     start() {
         if (level.levelsCleared === 0) { //this code only runs on the first level
             // simulation.isHorizontalFlipped = true
-            // m.setField("metamaterial cloaking")
+            // m.setField("standing wave")
             // b.giveGuns("laser")
             // tech.giveTech("scrap-bot manufacturing")
             // tech.giveTech("dynamo-bot upgrade")
-            // tech.giveTech("time crystals")
+            // tech.giveTech("options exchange")
             // tech.giveTech("ICBM")
             // tech.giveTech("grappling hook")
-            // tech.giveTech("annelids")
-            // for (let i = 0; i < 10; i++) powerUps.directSpawn(0, 0, "tech");
-            // for (let i = 0; i < 9; i++) tech.giveTech("WIMPs")
+            // tech.giveTech("paradigm shift")
+            // for (let i = 0; i < 1; i++) powerUps.directSpawn(450, -50, "tech");
+            // for (let i = 0; i < 15; i++) tech.giveTech()
             // for (let i = 10; i < tech.tech.length; i++) { tech.tech[i].isBanished = true }
             // powerUps.research.changeRerolls(100000)
             // for (let i = 0; i < 5; i++) tech.giveTech("corona discharge")
@@ -83,7 +83,7 @@ const level = {
             }
         }
         if (tech.isExtraMaxEnergy) {
-            tech.healMaxEnergyBonus += 0.05 * powerUps.totalPowerUps //Math.min(0.02 * powerUps.totalPowerUps, 0.51)
+            tech.healMaxEnergyBonus += 0.1 * powerUps.totalPowerUps //Math.min(0.02 * powerUps.totalPowerUps, 0.51)
             m.setMaxEnergy();
         }
         if (tech.isGunCycle) {
@@ -243,7 +243,7 @@ const level = {
                 // level.levels.push(level.communityLevels)
                 level.levels = level.levels.concat(level.communityLevels)
                 level.levels = shuffle(level.levels); //shuffles order of maps
-                level.levels.splice(0, 9); //remove some random levels to make up for adding the community levels
+                level.levels.splice(0, level.communityLevels.length); //remove some random levels to make up for adding the community levels
                 simulation.isHorizontalFlipped = false;
             } else {
                 level.levels = shuffle(level.levels); //shuffles order of maps
@@ -2473,7 +2473,6 @@ const level = {
             localSettings.loreCount++ //hear the next conversation next time you win
             if (localSettings.isAllowed) localStorage.setItem("localSettings", JSON.stringify(localSettings)); //update local storage
         }
-
         // const hazardSlime = level.hazard(-1800, 150, 3600, 650, 0.004, "hsla(160, 100%, 35%,0.75)")
         level.isHazardRise = false //this is set to true to make the slime rise up
         const hazardSlime = level.hazard(-1800, -800, 3600, 1600, 0.004, "hsla(160, 100%, 35%,0.75)")
@@ -2561,6 +2560,7 @@ const level = {
         simulation.zoomTransition(level.defaultZoom)
         // document.body.style.backgroundColor = "#aaa";
         document.body.style.backgroundColor = "#ddd";
+        color.map = "#808f8f"
 
         spawn.mapRect(-3000, 800, 5000, 1200); //bottom
         spawn.mapRect(-2000, -2000, 5000, 1200); //ceiling
@@ -2624,7 +2624,7 @@ const level = {
         spawn.mapRect(4850, -275, 50, 175);
 
         //???
-        level.difficultyIncrease(30) //30 is near max on hard  //60 is near max on why
+        // level.difficultyIncrease(30) //30 is near max on hard  //60 is near max on why
         m.addHealth(Infinity)
 
         // spawn.starter(1900, -500, 200) //big boy
@@ -2636,7 +2636,7 @@ const level = {
         // spawn.powerUpBossBaby(3200, -500)
         // spawn.snakeBoss(1700, -500)
         // spawn.streamBoss(3200, -500)
-        spawn.pulsarBoss(1700, -500)
+        // spawn.pulsarBoss(1700, -500)
         // spawn.spawnerBossCulture(3200, -500)
         // spawn.grenadierBoss(1700, -500)
         // spawn.growBossCulture(3200, -500)
@@ -2646,7 +2646,7 @@ const level = {
         // spawn.launcherBoss(3200, -500)
         // spawn.blockBoss(1700, -500)
         // spawn.blinkBoss(3200, -500)
-        // spawn.mantisBoss(1700, -500)
+        // spawn.spiderBoss(1700, -500)
         // spawn.tetherBoss(1700, -500) //go to actual level?
         // spawn.revolutionBoss(1900, -500)
         // spawn.bomberBoss(1400, -500)
@@ -2654,8 +2654,8 @@ const level = {
         // spawn.shieldingBoss(1700, -500)
 
         // for (let i = 0; i < 10; ++i) spawn.bodyRect(1600 + 5, -500, 30, 40);
-        // for (let i = 0; i < 5; i++) spawn.focuser(1900, -500)
-        spawn.pulsar(1900, -500)
+        for (let i = 0; i < 1; i++) spawn.stabber(1900, -500)
+        // spawn.pulsar(1900, -500)
         // spawn.shield(mob[mob.length - 1], 1900, -500, 1);
         // mob[mob.length - 1].isShielded = true
         // spawn.nodeGroup(1200, 0, "grenadier")
@@ -2672,6 +2672,7 @@ const level = {
         level.defaultZoom = 2000
         simulation.zoomTransition(level.defaultZoom)
         document.body.style.backgroundColor = "#d0d5df" //"#d8dadf";
+        color.map = "#334046";
         // powerUps.spawnStartingPowerUps(1475, -1175);
         // spawn.debris(750, -2200, 3700, 16); //16 debris per level
         const button = level.button(1400, 0)
@@ -3198,6 +3199,8 @@ const level = {
         level.defaultZoom = 2300
         simulation.zoomTransition(level.defaultZoom)
         document.body.style.backgroundColor = "#d8dadf";
+        color.map = "#3d4240"
+
         powerUps.spawnStartingPowerUps(-575, -2925)
         // spawn.debris(750, -2200, 3700, 16); //16 debris per level            //no debris?
 
@@ -3671,6 +3674,7 @@ const level = {
         level.defaultZoom = 2200
         simulation.zoomTransition(level.defaultZoom)
         document.body.style.backgroundColor = "#d5d5d5";
+        color.map = "#555"
         spawn.mapRect(0, -1955, 175, 30);
         const removeIndex1 = map.length - 1 //so much work to catch blocks caught at the bottom of the vertical portals
         spawn.mapRect(1225, -1955, 175, 30);
@@ -3968,6 +3972,7 @@ const level = {
         level.defaultZoom = 1800
         simulation.zoomTransition(level.defaultZoom)
         document.body.style.backgroundColor = "hsl(138, 3%, 74%)";
+        color.map = "#3d4240"
         powerUps.spawnStartingPowerUps(3475, 1775);
         spawn.debris(4575, 2550, 1600, 9); //16 debris per level
         spawn.debris(7000, 2550, 2000, 7); //16 debris per level
@@ -9489,10 +9494,9 @@ const level = {
             Matter.Body.setDensity(me, 0.014); // extra dense, normal is 0.001 // makes effective life much larger
             me.onDeath = function() {
                 // applying forces to player doesn't seem to work inside this method, not sure why
-                powerUps.spawn(this.position.x, this.position.y, "ammo");
-                powerUps.spawn(this.position.x, this.position.y, "ammo");
-                if (Math.random() > 0.2) powerUps.spawn(this.position.x, this.position.y, "heal", true, null,
-                    30 * (simulation.healScale ** 0.25) * Math.sqrt(tech.largerHeals) * Math.sqrt(0.1 + Math.random() * 0.5));
+                powerUps.spawn(this.position.x + 20, this.position.y, "ammo");
+                if (Math.random() > 0.5) powerUps.spawn(this.position.x, this.position.y, "ammo");
+                if (Math.random() > 0.3) powerUps.spawn(this.position.x, this.position.y, "heal", true, null, 30 * (simulation.healScale ** 0.25) * Math.sqrt(tech.largerHeals) * Math.sqrt(0.1 + Math.random() * 0.5));
                 if (simulation.difficulty > 5) {
                     // fling player to center
                     const SUB = V.sub(this.position, player.position)
@@ -9808,11 +9812,13 @@ const level = {
             }
         };
         let oldNextLevel = level.nextLevel;
+        const oldFallHeight = simulation.fallHeight;
         level.nextLevel = () => {
             color.map = "#444";
             m.death = m.oldDeath;
             canvas.style.filter = "";
             level.nextLevel = oldNextLevel;
+            simulation.fallHeight = oldFallHeight;
             oldNextLevel();
         }
         let bounds = [];
@@ -9824,6 +9830,7 @@ const level = {
                 m.death = m.oldDeath;
                 canvas.style.filter = "";
                 level.nextLevel = oldNextLevel;
+                simulation.fallHeight = oldFallHeight;
             }
             m.oldDeath();
         }
@@ -10233,6 +10240,7 @@ const level = {
                     level.exit.x = 4500;
                     level.exit.y = -2030;
                     relocateTo(50, -2050);
+                    simulation.fallHeight = -1000;
                     simulation.setZoom(1800);
                     templePlayer.startAnim = -1;
                     for (let i = 0; i < tech.wimpCount + tech.wimpExperiment; i++) {
@@ -10266,6 +10274,7 @@ const level = {
                 if (templePlayer.room1ToRoom2Anim === 960) {
                     makeLore("You are trying too hard.");
                     relocateTo(0, -7050);
+                    simulation.fallHeight = -6000;
                     templePlayer.stage = 2;
                 }
                 if (templePlayer.room1ToRoom2Anim === 1200) {
@@ -10313,6 +10322,7 @@ const level = {
                     makeLore("Do not interfere with me.");
                     templePlayer.stage = 3;
                     relocateTo(50, -13150);
+                    simulation.fallHeight = -10000;
                     simulation.zoomTransition(1800);
                     templePlayer.startAnim = -1;
                     // Might be a bit harsh to the player if the WIMPs are involved in the third level
diff --git a/js/player.js b/js/player.js
index 3b898fc..b71f307 100644
--- a/js/player.js
+++ b/js/player.js
@@ -1557,7 +1557,6 @@ const m = {
                             if (this.drainCD > m.cycle) {
                                 m.pushMass(mob[i], 0);
                             } else {
-                                console.log(this.drainCD)
                                 m.pushMass(mob[i]);
                                 this.drainCD = m.cycle + 15
                             }
diff --git a/js/powerup.js b/js/powerup.js
index b37f654..2060e6d 100644
--- a/js/powerup.js
+++ b/js/powerup.js
@@ -259,14 +259,15 @@ const powerUps = {
     showDraft() {
         // document.getElementById("choose-grid").style.gridTemplateColumns = "repeat(2, minmax(370px, 1fr))"
         // document.getElementById("choose-background").style.display = "inline"
-        document.getElementById("choose-background").style.visibility = "visible"
-        document.getElementById("choose-background").style.opacity = "0.6"
+        // document.getElementById("choose-background").style.visibility = "visible"
+        // document.getElementById("choose-background").style.opacity = "0.8"
         // document.getElementById("choose-grid").style.display = "grid"
         document.getElementById("choose-grid").style.transitionDuration = "0.25s";
         document.getElementById("choose-grid").style.visibility = "visible"
         document.getElementById("choose-grid").style.opacity = "1"
         //disable clicking for 1/2 a second to prevent mistake clicks
         document.getElementById("choose-grid").style.pointerEvents = "none";
+        document.body.style.cursor = "none";
         setTimeout(() => {
             document.getElementById("choose-grid").style.pointerEvents = "auto";
             document.body.style.cursor = "auto";
@@ -279,10 +280,23 @@ const powerUps = {
         // }
         simulation.paused = true;
         simulation.isChoosing = true; //stops p from un pausing on key down
-        build.pauseGrid(true)
+        build.pauseGrid()
+        document.getElementById("pause-grid-right").style.opacity = "0.3"
+        document.getElementById("pause-grid-left").style.opacity = "0.3"
+        //hide health bar, guns, power ups list
+
+        requestAnimationFrame(() => {
+            ctx.fillStyle = `rgba(221,221,221,0.6)`;
+            ctx.fillRect(0, 0, canvas.width, canvas.height);
+        });
     },
-    endDraft(type, isCanceled = false) {
+    endDraft(type, isCanceled = false) { //type should be a gun, tech, or field
         if (isCanceled) {
+            if (tech.isCancelTech && Math.random() < 0.9) {
+                // powerUps.research.use('tech')
+                powerUps[type].effect();
+                return
+            }
             if (tech.isCancelDuplication) {
                 tech.cancelCount++
                 tech.maxDuplicationEvent()
@@ -300,6 +314,10 @@ const powerUps = {
                     powerUps.spawn(m.pos.x + 40 * (Math.random() - 0.5), m.pos.y + 40 * (Math.random() - 0.5), spawnType, false);
                 }
             }
+            // if (tech.isCancelTech && Math.random() < 0.3) {
+            //     powerUps.spawn(m.pos.x + 40 * (Math.random() - 0.5), m.pos.y + 40 * (Math.random() - 0.5), "tech", false);
+            //     simulation.makeTextLog(`<strong>options exchange</strong>: returns 1 <strong class='color-m'>tech</strong>`)
+            // }
             if (tech.isBanish && type === 'tech') { // banish researched tech by adding them to the list of banished tech
                 const banishLength = tech.isDeterminism ? 1 : 3 + tech.isExtraChoice * 2
                 for (let i = 0; i < banishLength; i++) {
@@ -579,7 +597,7 @@ const powerUps = {
             let choice3 = -1
             if (choice1 > -1) {
                 let text = ""
-                if (!tech.isSuperDeterminism) text += `<div class='cancel' onclick='powerUps.endDraft("field",true)'>✕</div>`
+                if (!tech.isSuperDeterminism) text += `<div class='cancel' onclick='powerUps.endDraft("field",true)'>${tech.isCancelTech ? "?":"✕"}</div>`
                 text += `<h3 style = 'color:#fff; text-align:left; margin: 0px;'>field</h3>`
                 text += `<div class="choose-grid-module" onclick="powerUps.choose('field',${choice1})"><div class="grid-title"><div class="circle-grid field"></div> &nbsp; ${m.fieldUpgrades[choice1].name}</div> ${m.fieldUpgrades[choice1].description}</div>`
                 powerUps.field.choiceLog.push(choice1)
@@ -689,7 +707,7 @@ const powerUps = {
                 }
 
                 let text = ""
-                if (!tech.isSuperDeterminism) text += `<div class='cancel' onclick='powerUps.endDraft("tech",true)'>✕</div>`
+                if (!tech.isSuperDeterminism) text += `<div class='cancel' onclick='powerUps.endDraft("tech",true)'>${tech.isCancelTech ? "?":"✕"}</div>`
                 text += `<h3 style = 'color:#fff; text-align:left; margin: 0px;'>tech</h3>`
                 let choice1 = pick()
                 // console.log(choice1)
@@ -829,7 +847,7 @@ const powerUps = {
             let choice3 = -1
             if (choice1 > -1) {
                 let text = ""
-                if (!tech.isSuperDeterminism) text += `<div class='cancel' onclick='powerUps.endDraft("gun",true)'>✕</div>`
+                if (!tech.isSuperDeterminism) text += `<div class='cancel' onclick='powerUps.endDraft("gun",true)'>${tech.isCancelTech ? "?":"✕"}</div>`
                 text += `<h3 style = 'color:#fff; text-align:left; margin: 0px;'>gun</h3>`
                 text += `<div class="choose-grid-module" onclick="powerUps.choose('gun',${choice1})"><div class="grid-title"><div class="circle-grid gun"></div> &nbsp; ${b.guns[choice1].name}</div> ${b.guns[choice1].description}</div>`
                 if (!tech.isDeterminism) {
@@ -1013,7 +1031,7 @@ const powerUps = {
 
                 for (let i = 0; i < tech.tech[choose].count; i++) {
                     powerUps.directSpawn(m.pos.x, m.pos.y, "tech");
-                    powerUp[powerUp.length - 1].isDuplicated = true
+                    // powerUp[powerUp.length - 1].isDuplicated = true
                 }
                 // remove a random tech from the list of tech you have
                 tech.tech[choose].remove();
@@ -1045,7 +1063,7 @@ const powerUps = {
         }
     },
     pauseEjectTech(index) {
-        if (tech.isPauseEjectTech || simulation.testing) {
+        if ((tech.isPauseEjectTech || simulation.testing) && !simulation.isChoosing) {
             if (Math.random() < 0.1 || tech.tech[index].isFromAppliedScience || (tech.tech[index].bonusResearch !== undefined && tech.tech[index].bonusResearch > powerUps.research.count)) {
                 tech.removeTech(index)
                 powerUps.spawn(m.pos.x + 40 * (Math.random() - 0.5), m.pos.y + 40 * (Math.random() - 0.5), "research", false);
diff --git a/js/simulation.js b/js/simulation.js
index c7740c7..2d47499 100644
--- a/js/simulation.js
+++ b/js/simulation.js
@@ -631,6 +631,17 @@ const simulation = {
         document.getElementById("splash").style.display = "none"; //hides the element that spawned the function
         document.getElementById("dmg").style.display = "inline";
         document.getElementById("health-bg").style.display = "inline";
+
+        document.getElementById("tech").style.display = "inline"
+        document.getElementById("guns").style.display = "inline"
+        document.getElementById("field").style.display = "inline"
+        document.getElementById("health").style.display = "inline"
+        document.getElementById("health-bg").style.display = "inline"
+        // document.body.style.overflow = "hidden"
+        document.getElementById("pause-grid-left").style.display = "none"
+        document.getElementById("pause-grid-right").style.display = "none"
+        document.getElementById("pause-grid-right").style.opacity = "1"
+        document.getElementById("pause-grid-left").style.opacity = "1"
         ctx.globalCompositeOperation = "source-over"
         ctx.shadowBlur = 0;
         // ctx.shadowColor = '#000';
@@ -816,6 +827,9 @@ const simulation = {
         let holdTarget = (m.holdingTarget) ? m.holdingTarget : undefined //if player is holding something this remembers it before it gets deleted
         tech.deathSpawnsFromBoss = 0;
         simulation.fallHeight = 3000;
+        document.body.style.backgroundColor = "#eee" //"#d8dadf";
+        color.map = "#444";
+
         m.fireCDcycle = 0
         m.drop();
         m.hole.isOn = false;
diff --git a/js/spawn.js b/js/spawn.js
index cc4669e..c0dbf37 100644
--- a/js/spawn.js
+++ b/js/spawn.js
@@ -91,11 +91,11 @@ const spawn = {
                     spawn.lineGroup(x, y, pick);
                 }
             } else {
-                if (Math.random() < 0.07) {
+                if (Math.random() < 0.1) {
                     spawn[pick](x, y, 90 + Math.random() * 40); //one extra large mob
                     spawn.spawnOrbitals(mob[mob.length - 1], mob[mob.length - 1].radius + 50 + 200 * Math.random(), 1)
-                } else if (Math.random() < 0.35) {
-                    spawn.blockGroup(x, y) //hidden grouping blocks
+                    // } else if (Math.random() < 0.35) {
+                    // spawn.blockGroup(x, y) //hidden grouping blocks
                 } else {
                     pick = (Math.random() < 0.5) ? "randomList" : "random";
                     if (Math.random() < 0.55) {
@@ -3254,7 +3254,7 @@ const spawn = {
             ctx.lineTo(best.x, best.y);
         }
     },
-    stabber(x, y, radius = 25 + Math.ceil(Math.random() * 12), spikeMax = 9) {
+    stabber(x, y, radius = 25 + Math.ceil(Math.random() * 12), spikeMax = 7) {
         if (radius > 80) radius = 65;
         mobs.spawn(x, y, 6, radius, "rgb(220,50,205)"); //can't have sides above 6 or collision events don't work (probably because of a convex problem)
         let me = mob[mob.length - 1];
@@ -3265,11 +3265,14 @@ const spawn = {
         me.spikeVertex = 0;
         me.spikeLength = 0;
         me.isSpikeGrowing = false;
+        me.spikeGrowth = 0;
         me.isSpikeReset = true;
         me.collisionFilter.mask = cat.map | cat.body | cat.bullet | cat.player //can't touch other mobs
         Matter.Body.rotate(me, Math.PI * 0.1);
         spawn.shield(me, x, y);
         // me.onDamage = function () {};
+        // me.onHit = function() { //run this function on hitting player
+        // };
         me.onDeath = function() {
             if (this.spikeLength > 4) {
                 this.spikeLength = 4
@@ -3287,7 +3290,7 @@ const spawn = {
                 if (this.seePlayer.recall) {
                     const dist = Vector.sub(this.seePlayer.position, this.position);
                     const distMag = Vector.magnitude(dist);
-                    if (distMag < this.radius * 7) {
+                    if (distMag < radius * spikeMax) {
                         //find nearest vertex
                         let nearestDistance = Infinity
                         for (let i = 0, len = this.vertices.length; i < len; i++) {
@@ -3308,24 +3311,29 @@ const spawn = {
                 }
             } else {
                 if (this.isSpikeGrowing) {
-                    this.spikeLength += 1
+                    this.spikeLength += Math.pow(this.spikeGrowth += 0.02, 8)
+                    // if (this.spikeLength < 2) {
+                    //     this.spikeLength += 0.035
+                    // } else {
+                    //     this.spikeLength += 1
+                    // }
                     if (this.spikeLength > spikeMax) {
                         this.isSpikeGrowing = false;
+                        this.spikeGrowth = 0
                     }
                 } else {
-
-                    //reduce rotation
-                    Matter.Body.setAngularVelocity(this, this.angularVelocity * 0.8)
-
-                    this.spikeLength -= 0.2
+                    Matter.Body.setAngularVelocity(this, this.angularVelocity * 0.8) //reduce rotation
+                    this.spikeLength -= 0.3
                     if (this.spikeLength < 1) {
                         this.spikeLength = 1
                         this.isSpikeReset = true
+                        this.radius = radius
                     }
                 }
-                const spike = Vector.mult(Vector.normalise(Vector.sub(this.vertices[this.spikeVertex], this.position)), this.radius * this.spikeLength)
+                const spike = Vector.mult(Vector.normalise(Vector.sub(this.vertices[this.spikeVertex], this.position)), radius * this.spikeLength)
                 this.vertices[this.spikeVertex].x = this.position.x + spike.x
                 this.vertices[this.spikeVertex].y = this.position.y + spike.y
+                // this.radius = radius * this.spikeLength;
             }
         };
     },
diff --git a/js/tech.js b/js/tech.js
index ef5c2bd..ef47582 100644
--- a/js/tech.js
+++ b/js/tech.js
@@ -2246,7 +2246,7 @@ const tech = {
         },
         {
             name: "weak interaction",
-            description: "each unused <strong>power up</strong> at the end of a <strong>level</strong><br>adds 5 <strong>maximum</strong> <strong class='color-f'>energy</strong>", // <em>(up to 51 health per level)</em>",
+            description: "each unused <strong>power up</strong> at the end of a <strong>level</strong><br>adds 10 <strong>maximum</strong> <strong class='color-f'>energy</strong>", // <em>(up to 51 health per level)</em>",
             maxCount: 1,
             count: 0,
             frequency: 1,
@@ -3313,9 +3313,28 @@ const tech = {
                 tech.isShieldAmmo = false;
             }
         },
+        {
+            name: "options exchange",
+            link: `<a target="_blank" href='https://en.wikipedia.org/wiki/Option_(finance)' class="link">options exchange</a>`,
+            description: `clicking <strong style = 'font-size:150%;'>×</strong> for a <strong class='color-f'>field</strong>, <strong class='color-m'>tech</strong>, or <strong class='color-g'>gun</strong> has a <strong>90%</strong><br>chance to randomize <strong>choices</strong> and not <strong>cancel</strong>`,
+            maxCount: 1,
+            count: 0,
+            frequency: 1,
+            frequencyDefault: 1,
+            allowed() {
+                return !tech.isSuperDeterminism //&& (tech.isCancelRerolls || tech.isCancelDuplication)
+            },
+            requires: "not superdeterminism", //futures exchange, commodities exchange, 
+            effect() {
+                tech.isCancelTech = true
+            },
+            remove() {
+                tech.isCancelTech = false
+            }
+        },
         {
             name: "commodities exchange",
-            description: `clicking <strong style = 'font-size:150%;'>×</strong> to cancel a <strong class='color-f'>field</strong>, <strong class='color-m'>tech</strong>, or <strong class='color-g'>gun</strong><br>spawns <strong>5-10</strong> ${powerUps.orb.heal()}, ${powerUps.orb.ammo()}, or ${powerUps.orb.research(1)}`,
+            description: `clicking <strong style = 'font-size:150%;'>×</strong> to <strong>cancel</strong> a <strong class='color-f'>field</strong>, <strong class='color-m'>tech</strong>, or <strong class='color-g'>gun</strong><br>spawns <strong>5-10</strong> ${powerUps.orb.heal()}, ${powerUps.orb.ammo()}, or ${powerUps.orb.research(1)}`,
             maxCount: 1,
             count: 0,
             frequency: 1,
@@ -5075,7 +5094,7 @@ const tech = {
         },
         {
             name: "mutualism",
-            description: "increase <strong class='color-p' style='letter-spacing: 2px;'>spore</strong> <strong class='color-d'>damage</strong> by <strong>150%</strong><br><strong class='color-p' style='letter-spacing: 2px;'>spores</strong> borrow <strong>0.5</strong> <strong>health</strong> until they <strong>die</strong>",
+            description: "increase <strong class='color-p' style='letter-spacing: 2px;'>spore</strong> <strong class='color-d'>damage</strong> by <strong>150%</strong><br>they borrow <strong>0.5</strong> <strong>health</strong> until they <strong>die</strong>",
             isGunTech: true,
             maxCount: 1,
             count: 0,
@@ -5114,7 +5133,7 @@ const tech = {
         // },
         {
             name: "nematodes",
-            description: "<strong>shotgun</strong> and <strong class='color-p' style='letter-spacing: 2px;'>sporangium</strong> hatch <strong class='color-p' style='letter-spacing: -0.8px;'>worms</strong>", //<br><strong class='color-p' style='letter-spacing: -0.8px;'>worms</strong> do <strong>250%</strong> more <strong class='color-d'>damage</strong>
+            description: "<strong>shotgun</strong> and <strong class='color-p' style='letter-spacing: 2px;'>sporangium</strong> hatch <strong class='color-p' style='letter-spacing: -0.8px;'>worms</strong><br><strong class='color-p' style='letter-spacing: 2px;'>spore</strong> <strong class='color-m'>tech</strong> applies to <strong class='color-p' style='letter-spacing: -0.8px;'>worms</strong>",
             isGunTech: true,
             maxCount: 1,
             count: 0,
@@ -5152,16 +5171,16 @@ const tech = {
         },
         {
             name: "path integration",
-            description: "<strong>drones</strong>, <strong class='color-p' style='letter-spacing: 2px;'>spores</strong>, and <strong class='color-p' style='letter-spacing: 2px;'>worms</strong><br>travel with you through <strong>levels</strong>",
+            description: "<strong>drones</strong>, <strong class='color-p' style='letter-spacing: 2px;'>spores</strong>, and <strong class='color-p' style='letter-spacing: -0.8px;'>worms</strong><br>travel with you through <strong>levels</strong>",
             isGunTech: true,
             maxCount: 1,
             count: 0,
             frequency: 2,
             frequencyDefault: 2,
             allowed() {
-                return (tech.haveGunCheck("spores") && tech.isSporeFollow) || tech.haveGunCheck("drones") || (m.fieldUpgrades[m.fieldMode].name === "molecular assembler" && !(tech.isMissileField || tech.isIceField))
+                return (tech.isSporeFollow && (tech.haveGunCheck("spores") || (tech.haveGunCheck("shotgun") && tech.isSporeWorm))) || tech.haveGunCheck("drones") || (m.fieldUpgrades[m.fieldMode].name === "molecular assembler" && !(tech.isMissileField || tech.isIceField))
             },
-            requires: "spores, diplochory, drones",
+            requires: "spores, worms, diplochory, drones",
             effect() {
                 tech.isDronesTravel = true
             },
@@ -5172,7 +5191,7 @@ const tech = {
         {
             name: "anti-shear topology",
             link: `<a target="_blank" href='https://en.wikipedia.org/wiki/Topology' class="link">anti-shear topology</a>`,
-            description: "some <strong>projectiles</strong> last <strong>30% longer</strong><br><em style = 'font-size: 83%'>drone, spore, missile, foam, wave, neutron, ice</em>",
+            description: "some <strong>projectiles</strong> last <strong>30% longer</strong><br><em style = 'font-size: 83%'>drone, spore, worm, missile, foam, wave, neutron, ice</em>",
             isGunTech: true,
             maxCount: 3,
             count: 0,
@@ -7158,7 +7177,7 @@ const tech = {
             allowed() {
                 return m.fieldUpgrades[m.fieldMode].name === "plasma torch" || m.fieldUpgrades[m.fieldMode].name === "metamaterial cloaking" || m.fieldUpgrades[m.fieldMode].name === "pilot wave" || m.fieldUpgrades[m.fieldMode].name === "molecular assembler"
             },
-            requires: "metamaterial cloaking, molecular assembler, plasma torch or pilot wave",
+            requires: "cloaking, molecular assembler, plasma torch, pilot wave",
             effect() {
                 tech.aimDamage = 1.35
                 b.setFireCD();
@@ -7217,9 +7236,9 @@ const tech = {
             frequency: 3,
             frequencyDefault: 3,
             allowed() {
-                return (m.fieldUpgrades[m.fieldMode].name === "time dilation" || m.fieldUpgrades[m.fieldMode].name === "wormhole") && (build.isExperimentSelection || powerUps.research.count > 3)
+                return (m.fieldUpgrades[m.fieldMode].name === "negative mass" || m.fieldUpgrades[m.fieldMode].name === "time dilation" || m.fieldUpgrades[m.fieldMode].name === "wormhole") && (build.isExperimentSelection || powerUps.research.count > 3)
             },
-            requires: "wormhole, time dilation",
+            requires: "wormhole, time dilation, negative mass",
             effect() {
                 tech.fieldDuplicate = 0.12
                 powerUps.setDupChance(); //needed after adjusting duplication chance
@@ -9333,7 +9352,7 @@ const tech = {
         },
         {
             name: "cosmogonic myth",
-            description: `open a portal to a primordial version of reality<br>after 5 minutes <strong>close</strong> the portal, and spawn 1 of every power up`,
+            description: `<span style = "opacity: 9%;">open a portal to a primordial version of reality<br>in 5 minutes close the portal, spawn 1 of each power up</span>`,
             maxCount: 1,
             count: 0,
             frequency: 0,
@@ -9342,7 +9361,7 @@ const tech = {
             allowed() { return true },
             requires: "",
             effect() {
-                const urls = ["https://scratch.mit.edu/projects/14005697/fullscreen/", "https://scratch.mit.edu/projects/22573757/fullscreen/", "https://codepen.io/lilgreenland/full/ozXNWZ", "https://codepen.io/lilgreenland/full/wzARJY", "classic/7-1-2017/", "classic/4-15-2018/", "classic/7-11-2019/", "classic/9-8-2019/", "classic/7-15-2020/", "classic/6-1-2021/"]
+                const urls = ["https://scratch.mit.edu/projects/14005697/fullscreen/", "https://scratch.mit.edu/projects/22573757/fullscreen/", "https://scratch.mit.edu/projects/41429974/fullscreen/", "https://scratch.mit.edu/projects/43690666/fullscreen/", "https://codepen.io/lilgreenland/full/ozXNWZ", "https://codepen.io/lilgreenland/full/wzARJY", "classic/7-1-2017/", "classic/4-15-2018/", "classic/7-11-2019/", "classic/9-8-2019/", "classic/7-15-2020/", "classic/6-1-2021/"]
                 const choose = urls[Math.floor(Math.random() * urls.length)]
                 console.log(`opening new tab" ${choose}`)
                 let tab = window.open(choose, "_blank");
@@ -9665,6 +9684,7 @@ const tech = {
     isCancelDuplication: null,
     cancelCount: null,
     isCancelRerolls: null,
+    isCancelTech: null,
     isBotDamage: null,
     isBanish: null,
     isMaxEnergyTech: null,
diff --git a/style.css b/style.css
index 1c64d15..abd7c01 100644
--- a/style.css
+++ b/style.css
@@ -171,7 +171,7 @@ summary {
 
 #choose-background {
     position: absolute;
-    z-index: 3;
+    z-index: 2;
     width: 100%;
     height: 100%;
     background-color: #ccc;
diff --git a/todo.txt b/todo.txt
index ef8532c..a990916 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,21 +1,42 @@
 ******************************************************** NEXT PATCH **************************************************
 
-new fan level temple by Scar1337 is now add to community maps!
-  you have to try it out!
+you can scroll through the tech and gun menus while selecting power ups
+added another classic n-gon option in settings
 
-standing wave buffs
-  standing wave deflecting, is more efficient for multiple blocks in a very short time (< 1s)
-  spherical harmonics no longer deactivates on contact with shielded mobs
-  expansion increases block efficiency by 25->40%
+tech: options exchange - canceling tech,gun,field has a 90% chance for a reroll
 
-negative mass field
-  neutronium: move 33->25% slower
+stabber mobs now stab 15% shorter distance, but they can stab more often
+weak interaction gives 5->10 max energy per unused power up
+
+bug fixes
 
 ******************************************************** TODO ********************************************************
 
 nonrefundable tech don't display, this is confusing
     maybe they can show up but greyed out or something
 
+make your power up list scrollable while in power up selection pause menu
+
+Tech could probably be indexed, something like running
+tech.index = new Map();
+for (let i = 0; i < tech.tech.length; i++) {
+    tech.index.set(tech.tech.name, tech.tech);
+}
+
+So when you do something like tech.giveTech("nematodes") it can just do
+const queriedTech = tech.index.get("nematodes");
+if (queriedTech) {
+    queriedTech.count++;
+    queriedTech.effect();
+}
+
+guntech fire a bullet that fires nail fragments after 1s in the same direction as the original bullet
+  like overwatch roadhog
+
+make mol fab field do something cool when it blocks
+  generate energy?
+  reset lifespan of: drone,spore,worm, iceIX
+
 bring back:
   the old phase decoherence field
     make cloak only active on input.field down