The Gladiators: Galactic Circus Games

The Gladiator: Galactic Circus Games is an RTS game based in the 1970's. You take control of Greg Callahan, an, astronaut sent on a mission to explore a black hole discovered by the United States Military. When the mission goes wrong Greg is thrown into the very black hole he was sent to explore. He is captured by an alien race and taken to their homeworld.

Upon arrival into the alien homeworld Greg's crew is slaughtered leaving him alone to be executed. However his life is spared when the princess of the aliens gives him a chance to compete in the Deathbowl (the equivalent of a Roman gladiator arena) for a chance to become the ruler of their world.