The Witcher 2 : Assassins Of Kings - Developer Diary Part 2 - The Engine Part 2

Game - The Witcher 2 : Assassins Of Kings
Publisher - Atari
Developer - CD Projekt RED Studio
Engine - RED
Platform - PC, 360, PS3
Release Date - 17 May 2011

Source
http://www.youtube.com/user/NamcoBandaiGamesEU