 Perfect Dark was under development for nearly a year and its game engine was completely re @-@ written from scratch to support several Xbox 360 features . Therefore , although the game plays exactly the same as the original , the code and renderer is different . The game received generally favorable reviews . Some critics considered the relatively unchanged game to be outdated , but most agreed that the title was a solid revival of a classic . As of the end of 2011 , the game had sold nearly 410 @,@ 000 units . 
