High Gravity is a canceled mini-game that can only be accessed using a Cheat Engine. In this level, as its name suggests, the gravity is so high in this mini-game that the fired by any shooting plants will hit the ground. The projectiles that are fired by will only be able to hit a zombie at a close range. When a Balloon Zombie appears, it will fly over three squares before its balloon pops. While it is walking, it appears to be slipping.