1000 years after The Apocalypse caused by a great world war between human and monster, earth lost capabilities for living. Thus now, human as the winner of the great war try to find another planet to survive. As the loser monster became enslaved by human to help them on the mission of conquering other planet.
Become the mighty intergalactic monster trainer of Tyrex, a mighty and wild space creature. Train your monster, upgrade his equipment and take him to the arena to battle other trainers and their monsters.