Zacks Hardware Tower defense game. The toys of a crazy inventor came to life. Build defense towers to stop them.
The Serum 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.