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 Barneys "ladies" in this colorful and whimsical tower defense game!
• Fast-paced tower defense game featuring a full Story mode (46 levels) and 23 bonus challenges.
• Two game modes: Veteran mode for experienced players, and normal mode for beginners to the tower defense genre.
• Intense multitasking action using the Zapper and the Cowbell.
• 20 machines to build, including defense towers, items and traps.
• 23 different Martians, each possessing a unique ability.
• 4 seasons, each possessing a unique environment, theme music, and gameplay twist.
• 30 achievements (with specific achievements for Veteran mode).
• Cheerful and comic cartoon atmosphere, spoofing cheesy 50s Horror/Sci-Fi movies.
• Cows! <3
• Talking outhouse! (wait, what?!)