The Serum played 16018 times.
1 Player, Flash, Action, Shooting, Blood, Defend, Killing, Guns, Adventure, Evade, Collecting Games, Zombies, Shotgun, Monsters, Shoot 'em Up, Beat 'em Up

Description: Help Zack to find what's going on in the biomedicine lab where he works. Move with the arrow keys. Press Q to open your inventory. Press the space bar to open the doors. Use the mouse to choose objects from the inventory. Make click to attack. Press R to reload your weapon. Press the Caps lock to turn the light on.

Controls: Q - To choose weapon. R - to reload. W,A,S,D/Arrow keys - To move/jump. Mouse key - To aim and shoot. Space bar - To open doors/climb out.