10 Biggest Unanswered Video Game Mysteries

10. Banjo-Kazooie - Locked Treasure Chest

Rare’s classic adventure game Banjo-Kazooie was notorious for its hidden mysteries. Featuring a set of 6 brightly coloured “mystery eggs” and a large, usually inaccessible ice key as part of a process called “Stop 'n' Swop”, it became the subject of intense discussion within the fan community.

Rare have since revealed what Stop 'n' Swop entailed but the mysteries didn’t end here. One of Banjo Kazooie’s other noted oddities is within the “Mad Monster Mansion” level and focuses on a locked treasure chest.

Located atop the mansion, it’s accessible by breaking the window and climbing into the bedroom but despite many player efforts, no means of opening it was ever discovered. Datamining may have indicated nothing hidden within, but the chest’s shape and size indicates this wasn’t always the case.

This isn’t helped by the entrance to Treasure Trove Cove containing a similar chest outside it, one which can be accessed. So like with many elements of Banjo-Kazooie, this is destined to forever remain a mystery.