[b][i]Something mildly like Mortal Kombat, is something that sounds interesting to me. Like Mortal Kombat, with a Japanese/Korean/Thai/Chinese/Mongolian theme sounds great. Maybe with some "Hunnic" like people, representing the Caucasians. lol. 
So the idea is that there are some deity like people who decide the fate of the world/worlds, entire planets with the Tournaments. . . to make sure that the entire universe doesn't go to war with each other. Not just elemental gods, but also gods of war, gods of death, life, the sun, etcetera, fight each other by sending champions against each other, only risking their lives out of tournament, or in a tournament (But with a lot less power and ties to immortality). [/i][/b]