Algodoo

This doesn't exactly hover. I have an invisible mechanism under it to make it seem like it's hovering. It works well, but occasionally it gets caught on a sharp bump below. I have suspension on it, though.

WSAD to move hovercraft. Arrows to aim chain gun (made by LUke). Enter to fire chain gun. 8 and 2 on numpad to aim laser (made by RA2lover). SHIFT to fire laser.

This is breakable, by the way