The Serum: AftermathPublished on May 10, 2011. Played 1,659 times.
The Serum: Aftermath is an awesome zombie shooter game. Your mission is simple: Shoot the undead while picking up items and running. This is the ultimate zombie apocalypse and you are in the middle!
WAD to Move, Q to Change weapon, R to Reload weapon, E to Unleash serum, Spacebar to Action, Mouse to aim and shoot.