Mountain Tanks is a beautiful 3-D version of a Scorched Earth or Worms style game. Essentially an artillery trajectory game, this version is visually stunning and cleanly executed. Anyone can pick it up and play, and playing with a friend, in person or over a network is what it's all about.

The developer is extremely responsive--offering a rebuild for a bug within literally minutes of my reporting it (although your results, it's fair to say, may very).

This game is a must try.