An M-rated Metroid?

[VGPolyglot]

RolStoppable said:

VGPolyglot said:

Minority Report: Everybody Runs had ragdoll physics ans was rated T.

There are many things that can factor into ratings. I have mentioned a couple of common things, but I don't know all specifics for Halo. That game was way too boring to play through its campaign.

So, the question is, what do you like? Do you dislike any game with an M rating? (Or I guess 18 rating for PEGI).