In October 2001, Eidos Interactive announced Hitman 2: Silent Assassin, a sequel to Codename 47.[10] Following a slight delay in March 2002,[11] it was released in October 2002, this time for Microsoft Windows, as well as PlayStation 2 and Xbox.[12] To more easily overcome the challenge of bringing the game to consoles, IO Interactive grew "considerably" in headcount.[4] The game was received well by critics; according to Greg Kasavin in his review for GameSpot, "Hitman 2 fixes virtually all of the problems of its predecessor".[13] The success of Silent Assassin came as a surprise to the team,[8] and was swiftly followed up with by porting the game to GameCube the following year.[14]