These cancelled Perfect Dark games would have released on the Xbox 360. They would've had a more serious tone than both Perfect Dark Zero and the original N64 title, and would have been securely based in sci-fi rather than fantasy. Perfect Dark: Core was worked on for about a year, starting in 2006 and into 2007. Liam Robertson is a video game researcher and archiver. In his spare time, Liam creates videos and articles for Unseen64, but will also be contributing to the DidYouKnowGaming channel.