Where have they been found? This doesn't prove your claim that Tetris teaches geometry, or anything really, there's no data. I'm sure it does have some affect

Where have they been found? This doesn't prove your claim that Tetris teaches geometry, or anything really, there's no data. I'm sure it does have some affect though, like playing a lot of Tetris improves your ability to play Tetris. :) Unrelated, I notice the Tetris effect [1] strongly when I play RTS games too long. I still see the game when I go to bed, and I get weird urges to perform the actions of the game when I'm not playing. [1] http://en.wikipedia.org/wiki/Tetris_effect http://en.wikipedia.org/wiki/Tetris_effect