Board Thread:Fun and games/@comment-27853587-20161030023013

To do this, You upgrade a plant. Only one upgrade at a time. There is a max of 5 upgrades before a different plant is mentioned.

Example of valid upgrade:

Peashooter shoots twice as fast.

Example of invalid upgrade:

Peashooter's peas do double damage. Sometimes, it shoots at twice the fire rate.

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