The Serum

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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.
If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Total:
  • 12,619,648 plays
  • 30 active players online

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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.

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