The lost Banjo Kazooie: Grunty’s Curse is now added in the Unsen64 archive (Patreon)

Banjo Kazooie: Grunty’s Curse is the cancelled Game Boy Color  version of the Rare Ltd. project that would later become Banjo Kazooie: Grunty’s Revenge, released on GBA in 2003 by publisher, THQ. Initially established midway through 1999, Grunty’s Curse represents the original vision for the title with an alternate storyline, and levels that never saw the lightof day: http://www.unseen64.net/2015/10/05/banjo-kazooie-gruntys-curse-gameboy-color-cancelled/