Beware Planet Earth
Full Story Mode (46 levels over 4 seasons), plus 18 bonus challenges!
Intense action! Grab your Zapper to attack the Martians and overpower your machines!
20 wacky machines, from the classic defense tower to the Helicowpter!
Over 20 quirky Martians, from the Metalhead to the Mad Scientist to the Ninja!
Talking outhouse! (wait, what?!)
Free content to come!