In addition to combat changes, the "Solo Remix" includes redrawn high-definition sprites and is optimized for the Retina display of iOS devices. The original soundtrack and additional remixes of these songs are included. Wireless and social media features are also included: the Tin Pin Slammer can be played with other players via wireless connections, and the game can connect with the player's social media applications to display these as scanned thoughts from non-player characters within the game. The "Solo Remix" version features a remixed soundtrack from the original DS release. New assets at the conclusion of the iOS game include the appearance of Tsugumi Matsunae, a character from the sequel, "NEO: The World Ends With You". The iOS version of the game was pulled from the iOS App Store in February 2015 due to an issue that prevented the game from working with the iOS 8 operating system launched in September 2014, though the Android version remained available. It returned to the App Store in June 2015.