There should also be "Newbie" mode. Even though I completed Metroid Prime 1, Metroid Prime 2 was a kick in the gut right from the get-go. That game's too hard for me.
Super Mario Land 2 had an Easy mode.
But Resident Evil GC had Easy, which meant Hard, and Hard, which meant Frickin' Impossible. Yes, I know RE's from Capcom. Maybe I've become so used to Nintendo's easy games that actual hard games comes as a shocker. It took me years before I beat Star Fox SNES path 1 (easy path), then I realized "hey, that wasn't too bad". Then I got destroyed on Sector Y and Fortuna.