Tetramine Day! All Tetris lovers should get over to Bologna Italy for this giant meetup September 30. The catch? All you have to do is bring a tetramino made out of 60x60x60-centimeter squares, like the one you see here to the left. Designers, i think this means you can get creative on it, and decorate your tetramino as you wish... Still baffled as to how to make a giant tetris piece? Check out the video!