Metal Gear Solid 4 will feature psychological effects and battles, according to creator Hideo Kojima, who was waxing lyrical at last weekend's GO3 Entertainment Expo in Australia.
His speech proved to be amongst the most popular, and saw him talk about the history of the Metal Gear series and what he wanted to do differently in the upcoming PlayStation 3 title.
"To make it very simple, in the past Metal Gears, Snake was going into enemy environments--so everyone apart from Snake was an enemy," Gamespot reported that Kojima said. "This time it's a warzone, so you have country A or country B, so Snake could interfere with either of the countries. It does not necessarily mean that everyone is an enemy to Snake. This creates a new tension in playing this new hide and seek."
"I would also like to challenge the PS3's CPU power for not only what you can see, but also psychological effects, or psychological battles, where it can affect your gameplay."
Unfortunately he had no new assets or footage to show, and didn't touch on any new gameplay specifics.
Earlier this year Kojima revealed he had a "strong interest" in working on Xbox 360 and particularly PC. However, Konami remained insistent this morning to Eurogamer that MGS 4 was a PS3 title, though a release date and any other specifics were still to be confirmed.
Head over to our Metal Gear Solid 4 gamepage for the latest trailers and screenshots.