Marc Kerger was not content to have nothing but boring old shirts that didn't play videogames on them, so he decided to take matters into his own hands and make a shirt...that could play Tetris.
The shirt requires 4 AA batteries and contains over 130 LEDs. This is (basically) how it works:
This is a great start to wearable videogames. Can't wait for 2056, when we'll finally be able to play Skyrim on our pants.
Here's a full video of the shirt in action: