I'm not sure how good of a game this will be, but "Celebrity DeathMatch" is coming out, it might be fun. If you want to make your own, you can get "Fighter Maker 2" which should be out soon. There is also "Pride FC" coming out, which is similar to UFC but has more people and more fighting styles. And of course there is "Tekken 4", "Soul Calibur 2", and "Mortal Kombat: Deadly Alliance".