Here’s something amusing. A company called GameXtra has actually developed a modification for the Half Life engine called Proton Rally. For those who are in the gaming scene, you would know that the Half Life engine is very flexible. In fact, Proton Rally is likely based on the HL Rally mod.
It features Proton cars like the Waja, GEN2, and Satria Neo. You can buy new parts to soup up your car with the money you get from winning races. It’s never going to be as good as Gran Turismo though, as the Half Life engine was never meant to be used to develop racing games.
More screenshots and a video after the jump.
Video: Proton Rally Game