great game,
heres the math done
mats needed to make engine
screws=6
diamonds=9
gold=14
energy=43
glow=37
weeds=9
coal=38
iron=26
dirt=4
gas=32
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dirt needed for each recipe(minimum dirt needed, favoring coal1 over coal2)
weed=5
sediment=2
glow1=10
glow2=4
glow3=38
glow4=4
glow5=4
mushroom=25
gas=100
stone1=2
stone2=4
stone3=50
stone4=10
wood=19
energy=37
coal1=96
coal2=114
iron=140
screw=183
gold=601
diamond=1439
tank1=821
tank2=2239
tank3=5997
tank4=13933
mask1=425
mask2=1071
mask3=2553
mask4=5505
flipper1=239
flipper2=291
flipper3=1540
flipper4=4465
laser1=111
laser2=333
laser3=1535
laser4=4417
light1=53
light2=201
light3=2605
light4=3029
air supply=1121
light recharge=119
crafting=259
lighting=41
engine=34776
dirt able to hold at ounce, 64 per 55 inventory space =3520