u hav 1 mission, find other planets but then an engine blows ur losing altitude oh no u crash land on the moon and thats where our story begins. u wake up, ur vision is blury and all u can hear is screaming things but not human screams, ur vision cums back, u see zombies every where so get ur suit on and get off this good-for-nothing planet find and explore other planet defete zombies and all kinds a creatures and fight to the death, risk ur life to save ur friends and die honerably and u will be remembered forever!