Due to pressure from publisher Ubisoft to launch within a specific release window, the entire production of the game was completed by Gearbox in just under a year. The release schedule was so tight that the Xbox version of the game was sent to manufacturing prior to final certification approval from Microsoft. The original prototype consisted of the level Crack of Dawn (which was expanded and included in the final game). The PS2 version was ported by Ubisoft Shanghai, who completely changed the opening credits sequence and removed the original developer's names.