Fruit Land  
When I first started playing, I said.. Oooh Pac Man. But then the puzzles kept getting me! If it's not the puzzles then its the time. Try it. You'll like it.

Tank It!  
Unlike our friend Jim here, I have a 433mhz Piece 'O crap Compaq computer. And it still ran the game at 60fps. Its in OpenGL. Fine use of 3d, a little more work needs to be done to the texturing. But I say its cool.