Help the alien survive on the Earth!
How many UFO's can you take out?
Blow away aliens in Alien Showdown using a variety of powerful weapons.
The fourth installment of the City Siege franchise and the first to be set on another planet. Arm yourself with advanced units and lazer guns and take on the evil plants from this crazy world.
Use your tractor beam to pull the humans into your flying saucer. The more you collect the more money youâ€™ll have for upgrades.
Battle against Aliens, Robots, and Zombies in this futuristic fight for the survival of earth. Or be the enemies and fight for the destruction of it.
Use your grappling hooks to climb the canyon.
Evolve into a higher being, roam around the microscopic universe eating other organisms in your path.