Qix

( ) is a 1981 puzzle video game developed and published by Taito for arcades. Designed by husband and wife team Randy and Sandy Pfeiffer, Qix is one of a handful of games made by Taito's American division (another is Zoo Keeper). At the start of each level, the playing field is a large, empty rectangle, containing the Qix, an abstract stick-like entity that performs graceful but unpredictable motions within the confines of the rectangle. The objective is to draw lines that close off parts of the rectangle to fill in a set amount of the playfield.

is an arcade video game designed by Fukio Mitsuji and released by Taito in 1989. It is a successor to Qix, with extra features and a futuristic science fiction aesthetic, rather than Qixs abstract geometry style; the player pilots a small spaceship named "Monotros" instead of a marker, and the enemies come in the form of various aliens.