GPU PhysX effects, in a form of APEX Turbulence based smoke, are now available in the PC version of the Assassin’s Creed IV: Black Flag title.
Update: Adding GPU PhysX support to Assassin’s Creed IV – interview with Ubisoft Kiev
We have prepared a short comparison video to showcase the effects.
Turbulence smoke is utilizing latest APEX 1.3, can cast and recieve shadows on a rendering side, and is applied to a number of environmental and combat assets throughout the game.
Particles are affected by forcefields (such as shots and explosions) and weather conditions (such as wind). They can interact with characters and are also colliding with static level geometry, as a nice addition.