I know, I know, Battle Royale and all that stuff.
Anyway, what do you guys think of a Hunger Games style game? 12 people start off in a randomly generated area with no weapons or food or anything, and they have to fight each other off until one survives. You could upgrade your skills throughout your career in the game, but only the top few people earn upgrade points after each game. Things you can upgrade could include survival skills, likability (to get sponsors,) ranged weapon skills, close quarters weapons skills, overall athleticism, and so on. You would never be able to upgrade what physical items you went into a new game with, though. That's always the same for each player. I think maps would have to be random so no one could get an advantage over other players who are new to the terrain.