Tic Tac Doh! (2003)

A simple strategy game using Icehouse pieces. Players add pieces to a 3x3 grid whose boundaries are defined by the pieces played. A player wins by creating a line of 3 pieces of the same size. Nests of pieces count only as the top piece, Trees count as any piece in the tree.

A player loses if they have no legal move on their turn. Exception: if all pieces are played, the game is declared a tie.

This appeared in Hypothermia #15 and in the ICE-7 reference cards.

Rules are also available online or on the Icehouse Wiki.