A spinoff game of Sonic 4 Episode 1-2. Or what could have happened if the sales were better. Episode 3 never happened, but this music uses things from episode 1 and 2, so it's like it did happen. kind of. fun fact: there's an unused teaser thing in the code showing the master emerald powering the death Egg mark 2 and the silhouette of knuckles meant to foreshadow episode 3, but episode 3 never happened, so It goes unused.
songs from Sonic 4 episode 1 and episode 2, and also tomodachi life? not sure where that music was used, but that's what the original notes said. www.sonicthehedgehog4episode3free.com totally a real website thanks to @pokemondude21 for the original one. also thanks to Sega for all the music, and the guys from Tomodachi life for one of the tracks? I fixed all the names to be the correct stages! use the up and down arrows to change the music's pitch, but it only works on some tracks. tracks it works on: Splash hill act 1, Sylvania castle zone act 2, Dr. eggman battle, death egg act 1, death egg act 2, and final battle.