thrown blocks can damage intangible mobs for a couple seconds after they are thrown
they are set to act like bullets for a few seconds after being thrown
all blocks do 50% more damage to mobs and 50% longer stun
blocks do more damage vs. shielded mobs (damage penalty is 40%, was 66%))
mass driver - damage increase set to 200% (up from 100%)
negative mass field can lift blocks twice as heavy as before with little movement reduction
tech: flywheel - when mobs die their body is spun and flung at nearby mobs
requires mass driver, no other mob death tech
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