All foliage in the Xbox One and PlayStation 4 versions of Assassin's Creed IV: Black Flag will have physics assigned to them, game director Ashraf Ismail told GameSpot in a new interview. Various plants and leaves in the game will dynamically react to weather systems and player interaction.

　　"One thing that's very important to the brand of Assassin's Creed is credibility; having a world that you believe in. And on next-gen, as a quick example, we have physics on all the foliage in the world," Ismail told GameSpot in a new interview.

　　This technical achievement--highlighted in a recent trailer for the game--will go unnoticed by the masses, Ismail said.

　　"I guarantee 99.9 percent of the people won't even notice, but there's going to be a few people that pick up on certain details and it's this stuff that I think will show that we truly love this experience," he said.

　　Foliage effects aren't the only feature the next-generation versions of Assassin's Creed: Black Flag will make use of in an attempt to become the "most immersive Assassin's Creed yet." The game also features a "sea engine" that aims to replicate genuine movements of waves and colors of the water.

　　The game also features a weather system that includes independently lit rain drops, as well as dynamic puddles and volumetric fog.

　　Assassin's Creed IV: Black Flag launches October 29 for Xbox 360 and PlayStation 3, November 19 for PC, and as launch titles for the PS4 (November 15) and Xbox One (November 22).

　　The free-roaming action game set during the Golden Age of Pirates stars a young captain Edward Kenway, the grandfather of Assassin's Creed III's Connor and descendant of Desmond Miles. Players will meet up with legendary pirates including Blackbeard and Charles Vane as they journey through the West indies.

　　For more on Assassin's Creed IV: Black Flag, check out GameSpot's recent hands-on preview of the game.