I remember loving this game back when I was a kid. Everything was simply magical and fun, and let's not forget educational
The only downside I can think of is that there is no real story other than to explore the castle. There was an old man that was running around the place, but I could never seem to catch to him no matter how fast I solved the puzzles he left behind (And as a child, this was a massive feat and took all of my concentration).
Has anyone ever managed to catch him?