I was in 4th grade when the Super NES came out. In Super Mario World, I don’t remember trying to find all the exits/secret levels. What I remember most is that I found the overhead map of the levels fascinating. I also thought the music in most levels was very catchy. Finally, I remember it took me many many attempts to beat Bowser in the final battle. I think it involved flinging shells.
You should play Contra 3 next. I spent almost as many hours playing it as I did Super Mario World.
RE: Super Mario World (The Secret Stage You Never Knew About)