By Date
heat/radiation shielding
14 comments
early planet
9 comments
anti aestroid missile
16 comments
upgraded it
11 comments
non flammable coal
45 comments
sing engine
13 comments
alive creature that grows
14 comments
attempt at solid uranium
12 comments
uhh don't press the button
9 comments
napalm bottles
5 comments
double sprk
18 comments