which resulted in large discussions about voice acting versus mimes and grunts from previous Lego games. After development on the cutscenes had begun, voices were inevitably added. An idea was brought up to introduce traffic and pedestrians to Gotham City. When development on Gotham City had begun, the development team quickly had issues implementing such a system. After consideration from Jon Burton, the idea was scrapped in favor of a chaotic city with burned-up vehicles and fleeing pedestrians. Music An original score was written by the game's composer, Rob Westwood. In addition, the game's background music also consists of Danny Elfman's score from Batman (1989) and John Williams' score from Superman (1978). Marketing Prior to the game's official trailer, a promo for the game was leaked online by Lego fansite Bricktuts. On March 15, 2012, the game's first reveal trailer featuring gameplay was released to the public. The reveal trailer attracted almost a million views, and another trailer was released during E3 2012, two weeks before the game's release. During the 2012 Game Developers Conference held in San Francisco, a 45-minute hands-on demo of the game was presented. A demo was released on Xbox Live on June 19, 2012. Release Lego Batman 2: DC Super Heroes was released in North America on June 19, 2012, for the Microsoft Windows, PlayStation 3, Wii, Xbox 360, PlayStation Vita, Nintendo 3DS, and Nintendo DS, followed by a release in Europe on June 22, 2012. The game was released digitally on Windows through Steam, and later expanded to the Epic Games Store on September 19, 2019. An OS X version of the game developed by Feral Interactive was released on September 6, 2012. TT Games later developed a port for the Wii U that was released on May 21, 2013 in North America and on May 24, 2013 in Europe. A mobile version titled Lego Batman: DC Super Heroes was released for iOS on March 25, 2013 and for Android on March 2, 2016. Downloadable content Two add-on packs, the Heroes Pack and the Villains Pack, were released exclusively for the PlayStation 3 and Xbox 360 versions of the game. The Heroes Pack included five new characters: Nightwing, Katana, Shazam, Zatanna, and Damian Wayne. The Villains Pack included five new characters as well: Bizarro, Captain Cold, Black Adam, Black Manta, and Gorilla Grodd. These packs were originally released as pre-order bonuses for certain retailers.