als antwoord op JohnB

Oh, no I got links to neither... I was not actually planning on sending this in to the contest, it feels too simple. But I might clean it up and send it in, and then those links will come. (Also: what is the licensing model behind Tetris?)

Mobile is hard, btw, because Tetris relies on buttons so much. I can add some buttons to the page, but I'm afraid the game play won't be as good. Most mobile Tetrises I've seen do fancy things with gestures, but it always feels odd to me. It's just not a touch game :)