Ever seen those little grey hand-held Tetris games, with lots of variants built in? This is based on those. It's relatively simple (there's only a handful of extra game modes, and they're all variants of, well, Tetris), but you can mix and match to whatever suits your fancy.
When I first wrote this post I marked it as beta code, but I'm now satisfied it's stable and ready to put down as a "final release". By whatever coincedence wojbie posted his mirror util at about the same time as this, which was fortunate as it allowed me to quickly pick up some holes in my monitor-handling logic (since fixed).
I guess I may be able to claim the "first ComputerCraft game with music" title here - if one or more Iron Note Blocks from MoarPeripherals are available, along with the "note" resource pack downloadable from the same link, the game will play background music!
So, without further ado:
pastebin get nKQZwgtv bbtetris
Edited by Bomb Bloke, 10 February 2016 - 11:16 PM.