Fez

If you’ve played Fez then you already know that the game has an excellent soundtrack– it’s a synthy, moody, set of 26 chiptune tracks from Disasterpeace. What you probably don’t know is that the soundtrack contains a number of secrets hidden right inside of it. And by “secrets” I don’t mean instructions on how to find a hidden passageway or how to shave seconds off of your speedrun, there are images, text, and even a QR code embedded right in the music.