I don't really have any games to add to the list. I just wanted to say that Magical Quest was one of my favorite games as a kid. I was saddened last year to pop it into a SNES for the first time in a long time only to find that it no longer works.

The only other game I can think of off the top of my head is Final Lap Twin for the TurboGrafx. I'm not sure if it is actually a good game, but I remember sinking hours into that racing/rpg hybrid when I was a kid. I should play it again to see if it is actually as fun as I remember.