Nvidia has made the PS3 binary of its PhysX SDK free to all registered PlayStation 3 developers.
The graphics firm has reached an agreement with Sony Computer Entertainment Inc. to make the binary free to download on the SCEI Developer Network. Source code licences are still available, however.
"Nvidia is proud to support PlayStation 3 as an approved middleware provider," said Tony Tamasi, senior vice president of content and technology at Nvidia.
"Games developed for the PlayStation 3 using PhysX technology offer a more realistic and lifelike interaction between the games characters and other objects within the game. We look forward to the new games that will redefine reality for a new generation of gamers."