Ah, Stop 'n' Swop.
The mystery that left gamers puzzled for years.
I remember being extremely excited about raising Sharkfood Island, breaking down the door in Gobi's Valley and melting the ice wall in Wozza's cave. I was surprised to find three more eggs to collect. And, just like everyone else, I was scratching my head, wondering what the eggs and key were for and why were there only three eggs in Banjo-Tooie. It's not a unique memory, but it is one of my favorite memories.