Rob Carr, a former audio engineer at Rockstar Games, believes that the company has likely rebuilt its Rage Engine, which is used for all of its console releases since GTA 5. This explains why GTA 6 is taking so long to release. While Carr is not involved in the development of GTA 6, he believes the architecture of technology has significantly advanced significantly since the release of GTA 5, which was the last game to be released on 360 and PS3.