Harary's generalized tic-tac-toe
Harary's generalized tic-tac-toe or animal tic-tac-toe is a generalization of the game tic-tac-toe, defining the game as a race to complete a particular polyomino (Harary called them "animals") on a grid of squares. It was devised by Frank Harary in March 1977.
Source: Wikipedia — Harary's generalized tic-tac-toe (CC BY-SA 4.0)