Chad we know

The reason is, Nintendo has a strict copyright policy. They don't release M-rated games all that often because they don't want their brand to be associated with the factors that go into an M-rating. If Nintendo lets the internet get hold of their characters, they run the risk of people ruining their reputation, and they don't want that. Halo Studios (previously 343 Industries) doesn't have the same risk. The original Halo CE was rated M by the ESRB because Cortana looked vaguely like a woman. They lost that battle from the get-go. If you get a hold of Halo's characters, the owners could care less, because everyone knows NOBLE Six comes from Halo: Reach, so they're not gonna associate NOBLE Six with whateverthef**k the people using NOBLE Six are doing with him, as long as they credit the owners of Six's copyright.

Nintendo did release a M rated game and feature it to super smash bros. Nintendo does make M rated games but they rarely do and don't advertise it. Plus, halo was also rated for violence and language in the game that never exist.

You said it better than I did. The idea I was getting at is Nintendo cares about their image while Halo is just confident.