Answer: Tetrominoes

The geometric shapes that make up the playing pieces of the wildly popular game Tetris are a special class of polyominoes. Specifically, the playing pieces are a four-segment special class of polyominoes known as “tetrominoes” (a scientific way of saying “four segment geometric figure”).

There are variations of Tetris that significantly increase the difficulty of the game by increasing the segment count to 5 segments (pentominoes) and 6 segments (hexominoes).

Tetris certainly doesn’t have a stranglehold on the use of -noes shapes. Dominoes is a classic game where the players use two-square geometric shapes and the board game Blokus uses all the polynomino shapes up to the pentominoes to make up the playing pieces for the two sides.