Battlezone Combat Commander Key

Once fierce enemies, the United States and Russia abandon their space race and join forces in the face of an imminent alien attack. Combining to form the elite International Space Defense Force, they recruit you to help you lead the resistance, before the total devastation unleashes on the human race.
The solar system is at war. Take order.
Battlezone: Combat Commander remasteres the classic FPS-RTS Battlezone II with a sleek new image, new achievements, Steam Workshop support and more!
Fight through 24 intense missions, on 6 exotic living worlds, rummaging on the crucial bio-metal battlefield used to create powerful units, imposing defenses and vital facilities.