Oh, spoilers I suppose. It was all a dream! Remember when seemingly half the games ever made were “all just a dream”? Land of Illusion is one of them.
It’s just like Castle of Illusion, only more! The levels are more varied and there are a lot more of them, for starters. You also have to return to earlier levels to find new routes once you’ve finished other levels: You gain various powers which allow access to previously unreachable areas, such as being able to climb walls, or shrink to get through narrow gaps.
It makes for an even better game than the original, although it isn’t really any harder (only longer). Legend of Illusion next? You knows it.