TimeTank

NOTE: the game has no sound

You are the TimeTank.
A  tank that will travel in time to stop future enemies.

As of now, the land is filled with these factories.
They produce tanks, they are very dangerous!!!
If you are not careful, they will claim all of the land.

After 100 seconds of playing, you will travel to the future. This future contains better factories, if you haven't destroyed them yet.
Destroy the factories or do enough damage, so they won't spread their stoney ground.