The Genius Science Cat led a group of critters out of human slavery and built an animal city in a hidden part of the world.
One day, several years later, an alien legion suddenly invaded, turning humans into zombies and sweeping across the entire world.
The alien legion discovered the hidden animal city and decided to wipe out the critters. The genius Science Cat, determined to retake the world, led the critters to start fighting back.
There were four species of animals - chickens, puppies, penguins, and rabbits - fighting on the front lines.
Genius Science Cat customized 4 types of Mechs for them respectively as well as developing a variety of advanced devices and the latest bio-genetic technology to boost animals’ combat effectiveness.
idle Zity Rush APK is an idle tower defense game which also includes these elements: home defense, picnic defense, ground defense.
You need to merge and update animals in a rush to defeat zombies and Aliens, which is a challenge.