Grave (PvZ)

A Grave will release zombies during the final wave on each level where they are present.

At Night
They randomly populate the right half of the front lawn at Night. Nothing can be planted on the spaces they occupy. Grave Busters will remove a grave, and produce a silver coin ($10), or occasionally something more valuable, such as a gold coin ($50), Chocolate, a diamond ($1,000), or a plant for the player's Zen Garden.

Whack-a-Zombie
Graves appear in the mini-game Whack-a-Zombie, and new ones will appear every so often. In it, they release zombies, which must be whacked before they reach the house. However, if a Grave Buster is planted on a grave, no zombies will begin to come out, not even on the final wave. However, any zombie that already started to come out will finish and start eating the Grave Buster.

Survival: Night
In the normal and hard versions of Survival: Night, new graves will also appear right before each final wave even on top of plants. Also, if a Grave Buster is planted on a grave as the final wave begins, zombies will still come out of it.