Zombiquarium

This minigame is just insaniquarium, with zombies instead.

Plants
Zero...

Zombies
Snorkel Zombie

Strategy
Easy. You have two zombies from the start, with each zombie after those costing 100 sun. Click the screen to add a brain to the tank; these are necessary for the zombie's survival. If a zombie turns green, then the zombie is hungry. It dies if you don't feed it in time. Collect 1000 sun to end the level.