Players attempt to link three edges of a special triangularly shaped board with stones of their color. Turns consist of placing a single stone, with turns strictly alternating. There is no movement or capture.
This game is a direct descendant of Hex. It is a predecessor of Poly-Y, Star, and *Star.
Generalized by Begird.
Other Games played on Game of Y board:
Aliens and Amazons
Sexta
Singularity