The game plays like a normal TTT game. You spawn in and after a brief grace period, everyone becomes "Human" (Innocent). One player, however, becomes a "Were-Ape" (Traitor) and must try to deceive and eliminate all humans before the timer is up. All players are McCree, but the Were-ape can transform into an ulting Winston for a brief time.
With 8 or more players, two were-apes are chosen. They can see who the other ape is. Additionally, a human is chosen to become a "Hunter" who can sense if a were-ape is nearby. Humans who damage the hunter are given a penalty since the hunter cannot be a were-ape.