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ActionFightingPuzzleShootingStrategyAdventure
The Serum
2.79 - 773 votes
The SerumYour professor has gone missing along with some serums. Oh, and there are zombies on the loose! Take out the zombies as you seek to uncover the truth.

W : Jump, A : Left, D : Right, I/Q : Inventory, P/Esc : Pause, E/Space/Return : Open door, Left click : fire.

The game The Serum has been played 9797 times.

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