A follow-up to my 'Super Mario World: Secret Levels' thread.
Did you ever unlock all the secrets in Yoshi's Island? Difficult, eh? Unlocking all the levels in Super Mario World is a piece of cake compared to finishing all the Yoshi's Island levels with perfect 100 scores.
I remember working for months trying to get every last star, flower and red coin. The most annoying thing was when you painstakingly managed to collect all of the level's coins and flowers, only for an enemy to hit you near the finish line, costing you those precious stars you need to attain a perfect score.
I did eventually manage to finish the game with perfect scores on all of the levels. Those blasted monkeys in the jungle world really made life hard for me, though.
So, how did you do?