By Date
amogus radioation counter
1 comments
chemical battery
0 comments
warp contaiment
0 comments
rifle new
0 comments
Shrapnel boom
0 comments
10^1076 year
2 comments
micro fusion reactor
1 comments
more compact antimatter reactor
0 comments
advanced neutron solar panel
0 comments
trinity
2 comments
gas expansion rocket engine
24 comments