Signs are indicating that Grand Theft Auto IV will feature ground-breaking technology used in LucasArts' new Star Wars game, Star Wars: The Force Unleashed.
Rockstar has partnered with NaturalMotion to use the latter company's euphoria engine in "upcoming next generation" games.
Employed in the recently revealed The Force Unleashed, euphoria simulates the human body and motor nervous system. It means that in-game characters are fully interactive and always react differently to external influences, ultimately leading to a more life-like experience for the player.
Specific reference to how euphoria "uses the processing power of PLAYSTATION 3 and Xbox 360" to simluate the human body and motor nervous system was made in the announcement.
While Rockstar is yet to name games using euphoria, its integration of the tech is well advanced.