'''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]] on a square grid of varying size, rather than being limited to "in a row" constructions. It was devised by [[Frank Harary]] in March 1977, and is a broader definition than that of an [[m,n,k-game]].

Like many other two-player games, [[strategy stealing]] means that the second player can never win. All that is left to study is to determine whether the first player can win, on what board sizes he may do so, and in how many moves it will take.