If I remember right, the name "tetris" is copywrited, so you aren't supposed to name any game "Tetris" or even anything that ends in "tris" (Tetra- is fine because it's a Greek prefix).
I liked the game "Tetris Snake" but I wanted to warn you about what I heard was copywrited. You ought to look it up to double check me, but it'd suck to get sued.
I don't know about any other games, off the top of my head, but Tetris is an old favorite of mine so I heard about that case.
Btw, the games are fun. I'll check back eventually, Cetus was really fun. I downloaded it at Gamespy, btw.
द्वारा Dragon Bloodthirsty