Algodoo

He's been running around in that green tunic thousands of years after it went out of style. In the name of good taste, he must be destroyed. Good thing you have a big freaking tank with unlimited ammunition on its big freaking gun.

Arrow keys to drive, A and D to aim, W to fire, and E to clear away spent ammo.

Gun fires bursts of six to nine or so. You can change the burst length by changing the bounciness of the hammer or the spawn block, and you can change the power by increasing the radius of the circle in the spawn block's onCollide. So far I haven't been able to get color, density, or anything like that to be non-default for spawns.
Spawn code copied from Paradigm 29.


Also, neat suspension to look at. Flexible in all directions, but has a habit of collapsing or flipping backwards when bottomed out.