Hitman: Contracts is a stealth video game developed by IO Interactive and published by Eidos Interactive for Microsoft Windows, PlayStation 2 and Xbox. It is the third installment in the Hitman video game series. As of April 2009, the game has sold around 2 million copies. The game was later released as a DRM-free version in GOG.com. Due to licensing issues with a song featured in the game ("Immortal" by Clutch), Hitman: Contracts did not get a release on the online distribution service, Steam, until 2014, despite all other Hitman games being released on the platform.