Marvel Heroes 2015, originally known as Marvel Heroes, is a free-to-play massively multiplayer online action role-playing video game developed by Gazillion Entertainment and Secret Identity Studios. Characters such as Iron Man, Captain America, Deadpool and Wolverine serve as characters that players can unlock in the game. Players who pre-purchased a game pack received early access to the game on May 29, 2013. The game was then officially launched on June 4, 2013, on Microsoft Windows. An OS X version is planned to follow post-launch, and in November 2014 was in an open beta. The game was renamed to Marvel Heroes 2015 on June 4, 2014. The game will be rebranded again in January 2016 to Marvel Heroes 2016.