A battle between two aliens is ready to begin. The ring is made only for them and you have to choose your opponent. As red or blue, you have to beat your opponent at any cost. You have three heavy rounds to pass by the end of the game.
If you do not want to play against the computer, there is the option of multiplayer, where you will enjoy with friends. You can play with someone else, and see who is better. It is a good way to have fun, just calling friends to compete with you.