Alternate music track

An alternate music track is a secondary or tertiary musical piece that has a chance to play on a particular stages in Super Smash Flash 2 instead of the habitual main track, added for the sake of variety in the game. Alternate music tracks become available once the game has been booted up 10 times.

List of alternate music tracks per stage
✅ It was confirmed that, as of the Beta version, each multiplayer stage in the game will feature an alternate music track, with some stages having two. These are the alternate tracks that have been included so far:

Trivia

 * This feature originates from Super Smash Bros. Melee and Super Smash Bros. for Nintendo 3DS, which have alternate music tracks that randomly play on most stages.