Twenty-two lines, ten words a line, just like the blocks.

It's Mario. And then it's Tetris. And then it's Mario. And then it's Tetris. Copyright-infringing Flixel awesomeness - much better than the concept initially sounds. You should check this out.

This is ridiculous.

It's not Tetris, but it's something like it. This game is getting worryingly essential.

Eesh. Tetris in 500 bytes of Javscript and HTML. Yes, they're obfuscated and unpleasant, but wow, etcetera.

In a nutshell: it's Tetrinet for OSX. Get in.