The light-up dance floor that Sean had built a few years prior was made of 9 squares, each one consisting of a 5x5 grid of colored LEDs. A standard Tetris board is 10 blocks wide and 20 blocks high. MATH ALERT: When we rearranged the the squares to there were two columns, each four squares high, it was exactly the right size for a Tetris board. We had one square leftover, which was perfect for previewing the next piece that was coming.
The room was fish themed (thus Tetras instead of Tetris.) The controller for the game was installed into a foamy plastic fish leftover fro the join's point in 2018's Geisha House.