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Beware Planet Earth!

Heed the warning from the red planet, Earthlings! The Martians are about to strike our beloved planet to take our single most valuable resource: cows! Protect Barney’s “ladies” in this colorful and whimsical tower defense game! – 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! – 25 Achievements! – Cows! <3 – Talking outhouse! (wait, what?!)