[ndiddy]

You should try Tetris DX, it plays way better than the original Gameboy Tetris.

[tadfisher]

It's the epitome of mobile Tetris. No 7-bag, zero input delay, and of course, color. It's easy to cheese because of infinite lock delay resets (and wall climbing).

I also enjoyed Tetris DS because of its extremely addictive Push mode in multiplayer. I may have had to retake CS301 because of that game.