Both the SNES and Genesis versions of Ocean Software's The Flintstones contain a music track titled "Unused Song 2", a somber and atmospheric track known for being completely inappropriate for the game's tone and source material that was only accessible through the sound test. The song was not originally written for The Flintstones, but rather as a test track for Ocean's MEdit software by composer Dean Evans. It ended up in the game as filler for the sake of using up excess cartridge space, and was not at any point supposed to be used in game as anything other than a sound test track.

Furthermore, according to the description for the Video Game History Foundation's YouTube upload of the song's Genesis arrangement, the game was ported to that system by Teque UK programmer Colin Hughes singlehandedly. Consequently, Hughes was also responsible for rearranging "Unused Song 2" for the Genesis' synthesizer.