It's a simple link game using plant and zombie icons

Backgroud:
This story happened after famous 'Plants VS Zombies' war which is about Plants defending Zombies to eat Human Brain, becasue of this Zombie prefer eating plants now...
And there's a planet named "Plants over everywhere", all kinds of plants living on it.
Zombies have found this planet somedays ago.They should have delicious meal everyday but the Planet has a strange rule that only a pair of same kind plants can be eaten, or it equals poison. But their eyesight is low, and just then a poor man you are caught, so your misson is to help them find pair plants, or they will eat your brain, you konw eating brain is their nature...

4 Modes:
NORMAL: use plant icons, has 30 stages.
HARD: use smaller plant icons, shoter time, endless.
PRACTISE: use plant icons, endless.
ZOMBIE: use zombie icons, endless.