Tom Clancy's Rainbow Six 3: Black Arrow

Developed by Ubisoft Milan, Black Arrow is a semi-sequel to the console version of Rainbow Six 3. Still titled Tom Clancy's Rainbow Six 3, Black Arrow was developed and published by Ubisoft and released for the Xbox on August 5, 2004. Like Rainbow Six 3, Black Arrow was created to take advantage of Microsoft's popular Xbox Live online service. Along with two new online game modes; Total Conquest, Retrieval and a new offline mode Lone Rush, changes were also implemented into Black Arrow from the original Rainbow Six 3. A noticeable change was made to combat the unfair advantages of “lean walking”. This change still allows the player to lean but is unable to move until they return to the original standing straight posture.

Source: TheGamesDB