Your spaceship crashed, you are the lone survivor. The planet is inhabited by some gruesome and bloodthirsty alien creatures, and they haven't taken a shine to you!
Survive as long as you can as you splatter their sorry alien corpses all over the planet! Look out for the bonuses to help you, and learn new ability's to increase your chances of making it!
Use the arrow keys or WASD to move. Use your mouse to aim and shoot. Press space to view the 'perks' screen.