The first Hitman game, developed by IO Interactive and published by Eidos Interactive, introduced players to Agent 47, a genetically engineered assassin with a distinctive bald head and barcode tattoo. The game's success spawned a series of sequels, including Hitman 2: Silent Assassin (2002), Hitman: Contracts (2004), and Hitman: Blood Money (2006). The franchise's popularity was further amplified by the 2007 film adaptation, starring Timothy Olyphant as Agent 47.