If you picked up Retro City Rampage last month but skimped on the soundtrack due to its price, then Game Music Bundle 4 is for you. As little as $1 gets you the soundtracks to Retro City Rampage, Spelunky, Dear Esther, Shoot Many Robots, and Indie Game: The Movie. Spending $10 gets you Joypad Powerup, Kanto Symphony's EP, Skyrim's Main Theme, Adventures in Pixels by Ben Landis, and Jottobots by Josh Whelchel.