They've done Metroid Prime though, which was a very exploration-based FPS.
What do you mean by a COMPLETE Mario Tennis game?
I meant more in the way of more serious simulation, without the cutesy characters.
I also meant more in the vein of survival horror, like early Resident Evil, with less of an emphasis on action and more on legit terror.
Metroid Prime is an action-adventure game, though.
Mario Tennis was rushed out the door, in many ways more meager than the N64 original.
Why do cutesy characters matter?
I don't know if Resident Evil, even in its early days, achieved that level of terror. I found Silent Hill accomplished that more effectively. Anyway, Nintendo co-owns Fatal Frame, which is a slow-burn scary series.