Your school has been invaded by green bug-eyed monsters! Fortunately, the artillery locker in gym class was open, and you're armed with an assault rifle to repel them. But be careful... one touch from their acid-filled bodies can reduce you to bleached bones in a second! Start by saving one classmate. After that, you can select multiple students to carry out missions. Use the mouse to aim, select, and move; spacebar fires weapons.