 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 Some critics considered the relatively unchanged game to be outdated , but most agreed that the title was a solid revival of a classic .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 . 
 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 <a href='uninflect' title='1'><mark>plays</mark></a> exactly the same as the original , the code and renderer <a href='drop_aux' title='2'><mark>is</mark></a>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 Some critics considered the relatively unchanged game to be outdated , but most agreed that the title was a solid revival of a classic .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 <a href='been_done' title='3'><mark>had</mark></a> sold nearly 410 @,@ 000 units . 
Perfect Dark was under development fa nearly a year and its game engine was completely re @-@ written from scratch to support several Xbox 360 features . Therefore , although the game play exactly the same as the original , da code and renderer different . The game received generally favorable reviews . sum critics considered tdarelatively unchanged game to b outdated , but most agreed dat thdaitle was a solid revival of a classic . As of the end of 2011 , the game done sold nearly 410 @,@ 000 units .