Additions:
Flame tank (unlocked after normal tank)
Green wildfire, does much more damage and burns forests faster, but it is alien science and costs artifacts.
The flame tank does of course have a flamethrower on top instead of a normal gun.
I am mainly interested in early and late game balance (how long it takes to get it, is it useful after you have gotten there?) and if it is able to deal with larger biters.

Downloads: https://github.com/Danielv123/moarTanks/releases