If you have stumbled onto this website, you have landed onto a bit of DTR history. Shortly after the game Dirt Track Racing was released, Ray Carr (Nitro) hacked the game and produced a high horsepower version of this great racing sim. Welcome to the home of the "Nitro" chassis.more fun than you will ever have running high hp variants of a few of the more popular Ratbag Dirt Racing Games. Nitro Racing League is based on the following. Welcome to the Nitro Racing League. Released by Flash Gallery.