Frostbite Caves - Day 8 (Chinese version: pre-1.8)

Frostbite Caves - Day 15 is the eighth level of Frostbite Caves. It introduces the Plant Matching Brain Busters. The main objective of this level is to match at least three balls of the same color to make the plants on the left side of the lawn damage the zombies on the right side.

Difficulty
This level is quite easy, considering that it is the tutorial level for Plant Matching.