Why isn't samus in a mario kart game?

[Ryudo]

Wow this topic sucks.

And I will just say as a HUUUUUUGE Samus fan I would HATE to see her in a mario kart game to me that would diminish how badass she is sitting in this cartoon kart surrounded by cartoon characters and while I love Mario and co I would not want to see him in a metroid game as a playable character.

Cameo's are brief and usually a small reference.
Same goes for Link..if they add Samus then they would have to add link.

Mario Kart is for playable characters that were in the the mario universe of characters to play.

ROB is the only exception because he is sorta middle ground he is a character but also has no game franchise history and is part of Nintendo's hardware history.