The Serum played 3785 times.
1 Player, Flash, Action, Shoot Em Up, Shooting, Blood, Defend, Killing, Guns, Adventure, Evade, Beat Em Up, Collecting Games, Zombies, Shotgun, Monsters

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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.

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