Algodoo

A heavy (bounce-fire) cannon. Very powerful.

Press F for a second to fire all ammo. Press F and wait for one to shoot, then immediately (sorry, this is a beta, so it's hard to use) press D.
It's easy to fire all ammo at once, but it's difficult to shoot one at a time.

Also, press O to open cap on top and drag more ammo into the chamber.
It sometimes blows up when you try to fire the ammo slowly.
More updates to follow (hopefully).