In Humans VS Zombies there are two teams. The humans score to the positive, the Zombies score to the negative. For example a humans score would be +1 and the zombies score would be -1. The game starts off at zero and the teams battle to reach either +15 or -15. The humans objective is to reach +15, while the zombie teams goal is to reach -15. Think of it like a tug of war, but with axes instead of rope