Which "Mature" titles are actually immature?

[PullusPardus]

Immature games,
well mostly they put M on them so that kids would buy them and think they are "Real big boys" but here is to list some

1) GTA (Probably most rockstar games)
2) Gears of War
3) Most of the gory games
4) Silly games like Onechambra and bloodrayne