Download it here or read more about it here

ProjectRIK is an FPS style racing game focused entirely around different types of movement.

There is no fragging or killing.

The basis of the game is competing for the fastest time on different 'runs'. In addition to the fairly challenging methods of gaining speed, there is also a wide variety of tricks you can perform. Multiple types of walljumps, halfjumps, crouchsliding, sloperunning, doublejumps, powerjumps, and so on. Surfing, along the lines of Counter-strike is also possible!

Oh, and it's completely free!