Your chopper crash-landed at an urban war zone. Use your machine gun to get through the hostile enemy soldiers while moving closer to the extraction point.
Welcome to alien infested planet! In campaign mode, missions range from offense to defense missions upon which you can build a base to stop the alien horde. Or there is a survival mode with 6 maps, where you destroy wave after wave of incoming aliens.
We're under attack! Man the turret and shoot the creeps that are overwhelming the planet. Help is on the way but it'll take 100 more days. Can you survive till then?
You've been ordered by Zeus to save the world! Stop the zombie horde coming from all paths only using your baseball bat! You'll be assisted by Dr. Clown, who's a magic rainbow sheep and a professor Monkey-For-A-Professor, to save the world!
Survive the onslaught of fifteen enemy types utilizing four contrivances, each with their own weapon compatibilities. You salvage scrap parts by destroying enemies, which are used to upgrade your contrivances, projectiles, and bunker.
You are sent out into the desert on a diversion mission. You must survive enemy attack for six days until main forces will take over. Defend your desert position for six long days.