Protect your city in endless defense gameplay. Merge wagons to increase firepower and unlock new abilities. Upgrade weapons and armor to defeat increasingly challenging waves of zombies. Customize routes and manage resources to sustain long battles.
The app requires logic, skill, and force to finish each level by catching diamonds and avoiding robots. It offers a story mode with over 35 levels, extended by user-created online levels.
Play as , a robot defending Earth from alien saucers. Navigate 3D environments with stereo 3D support using 3D glasses. Defend against saucer attacks, destroy alien ships, and complete missions to stop the Brain Aliens' invasion.