tiny-design:

The musical notes in Banjo-Kazooie must be collected in their entirety before exiting a level, or the notes collected are lost and reset. This was done in part to ease the burden of memory on the Nintendo 64 (which would have significant trouble keeping track of 900+ objects scattered throughout each level), as well as a method of pushing the player to explore worlds multiple times before collecting all of the notes at once.

Banjo-Kazooie (Nintendo 64)

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