FlashTris is a Tetris-like game. It features
multiple players over the Internet or a local
network, team games, bonus levels, play versus
computers, a pieces editor, and many other
options.
gauztris is a Tetris clone with High Score support
that compiles on Linux/FreeBSD/Solaris and
probably more. It was created to fill the void of
console tetris clones that will compile on
non-Linux platforms.