Abyss Lights: Frozen Systems - space-based fly 'n' shoot-style 3D game that applies the physics capabilities of AGEIA PhysX technology in the context of outer space. (818 hits)
X Motor Racing - auto simulator with new principles of the physics model. (782 hits)
Switchball - physics-based puzzle game, in which you control a ball which can push things around to solve the puzzles (773 hits)
Tiny and Big - platformer from independent developer Black Pants Studios that plays out in a setting "where common physics apply but everything else looks different." There are demos for Windows, Mac OS X, and Linux, and some gameplay trailers (690 hits)
Rochard - Rochard is a game where manipulating gravity and using the G-Lifter (a gravity device used to easily move weighty objects around) are crucial elements for success. With the help of his sci-fi mining tools and taking advantage of the laws of physics, the protagonist John Rochard will carry you through a game packed with puzzles, action, humor, great music, excellent level design and a story rich of twists. (687 hits)
Instagib: Source - It features not only graphical improvements, such as a shiny new weapon model and cool beam effects, but also the fun physics diversion of sending stray objects flying into the sky or at your enemies. (664 hits)
CellFactor: Revolution - action-packed first-person shooter with true-to- life physics for the PC (651 hits)
Trine - physics-oriented, side-scrolling action/platformer (642 hits)