	The proprietary Rockstar Advanced Game Engine (RAGE) was overhauled for the game to improve its draw distance rendering capabilities, and the Euphoria and Bullet engines handle further animation and environment rendering tasks. The team found they could render the game world with greater detail than in "Grand Theft Auto IV" because they had become familiar with the PlayStation 3 and Xbox 360's hardware. Art director Aaron Garbut said that while the consoles' ageing hardware were tiring to work with, the team could still render detailed lighting and shadows and "maintain a consistent look". Vice president Dan Houser agreed and felt that working on "Grand Theft Auto IV" with relatively new hardware was a challenge, but added "now we know what the hardware's capable of, so it's become a lot easier to move things along and a lot more fun, too". The PlayStation 3, PlayStation 4 and Xbox One versions fit onto one Blu-Ray Disc; Xbox 360 copies are distributed on two DVDs and require an 8 GB installation on the HDD or external storage device; while the Microsoft Windows (PC) version takes up seven DVDs. The team asserted that any differences between the PlayStation 3 and Xbox 360 versions would be negligible.