After The Virus is a cooperative deck builder in which you and your friends band together to survive and complete different missions. The 15 included missions form a storyline if played in sequence, but don't expect to survive that easily because the zombies will attack you in ever increasing numbers!
Your deck is invaded by more zombies each time it is reshuffled, so you need to search the area deck for useful weapons and other things to help you. Some stuff can be added to your deck while others will stay in your play area, and still other things will be usable only once in the game. To manage your deck and play area well is critical if you are to complete the mission before you are overwhelmed by the zombies!