[spoilers] Mario Kart 8 Deluxe: Booster Course Pass Mega Music Leak -

These music files aligned perfectly with a previous "Prefix Leak" that showed which game system (SNES, GBA, etc.) each slot belonged to, making the predictions near 100% accurate. 🏎️ Completion Status

The leak also included music pointers for heavy hitters that eventually appeared in the final waves, such as Maple Treeway (Wii), Koopa Cape (Wii), and Rainbow Road (Wii). 🔍 How the Leak Happened These music files aligned perfectly with a previous

Released alongside Wave 2, this update contained leftover data. The leak was considered "mega" because it provided

The leak was considered "mega" because it provided concrete evidence for tracks across multiple upcoming waves, specifically focusing on Wave 3 and beyond: London Loop (Tour) Peach Gardens (DS) Boo Lake (GBA) Rock Rock Mountain (3DS) Berlin Byways (Tour) Waluigi Stadium (GCN) Merry Mountain (Tour) Rainbow Road (3DS) etc.) each slot belonged to

Dataminers found files with internal names like STRM_BGM_GCN_WALUIGI_STADIUM_32K , which directly mapped to known series tracks.

The leak occurred through , which are very short (roughly 1-second) snippets used to prevent audio lag when a race starts.