Join the human alliance and enhance your fighting skills by going through a rigid training. When you're all set, you will be tasked to fight the aliens in the battlefield.

Protect your world from the alien invaders. You are one of the chosen warriors who have been trained to defeat and eliminate these aliens. There's no time left. You must hurry and complete your mission.

Choose to either save the earth from the zombie and alien invasions or to destroy it and join the enemy ranks. Don a wide variety of weapon, equipment and abilities to help you through the arena. Use your arrow keys to move, spacebar to jump, and your mouse to aim. Scroll through your weapons by using the Q/E keys and select a specific weapon by using the number keys.