Each level requires that the player create a thriving ecosystem with a different set of animals. For instance, the player might be asked to create an ecosystem with 50 zebra and 15 lions. If the player can achieve this goal before time runs out, she wins the level!

Combo Jewels
Players can also earn Combo Jewels to bring rain to the desert or turn a dry mudflat into a teeming oasis. Players earn these by creating smaller populations of other animals within her...