I seem to recall the RPG based on the video game Rune being touted as having options for playing without a GM, as well as touting a more competitive nature with clearly defined winners and losers. Never played it, though, so I can't say.
There was also some weird indie superhero RPG where you'd take two cards with interlocking teeth, stick them together to form your character, and people would collaborate to tell a story. Can't remember what that's called, though.