@infamous23
I'm barely older than you and I never got so overworked about "mature" themes in games or whatever, because it's not worth it. Viper1 said it all.
//Concerning Little Big Planet, Braid and Limbo. I can't say anything about Limbo since I didn't play it, but both LPB and Braid are horrible examples of good platforming mechanics, even the worst Mario game miles better than those in platforming action. I can agree though that both LBP and Braid might have some appeal besides platforming, but personally I've never found them good enough to finish those games.
The best example of nice and fresh platforming mechanics from recent games you may find is 'Splosion Man, but the game is quite repetitive due to mediocre level design and it's not challenging at all compared to such games as NSMBW.