This is a very accurate clone of Tetris Attack based on Brandon Lockaby's V3PdP engine. It works in a minimal sense and has pretty good netplay. I'm running public servers at the moment, so if you have someone to play with you can try that out. If you do, I should mention that I haven't put any effort into things other than gameplay yet, so everything but the play areas is ugly. Sorry about that.
I eventually want to build this into a feature-complete clone of the US SNES version of the game, with a config file that can be modified to turn various bugs or features on or off (for instance the 32-combo bug from the JP SNES version, the bug where garbage sometimes waits a frame to fall, GameCube or NDS scoring modes). It's a long way from here to there, though. Right now endless is the only mode and there is only one speed. Modes other than vs and puzzle will be trivial to make, but I really want to use this to play vs mode so I'll probably make that before anything else.
Arrow keys - move cursor
Z - swap panels
X - raise the stack