Fan games have been at the forefront of Sonic game design experimentation for a long time, and among the most interesting concepts fan have been pursuing is the idea of combining large, open levels with lots of paths with a momentum-based movement system. Games like Sonic Utopia and Sonic GT have made stellar use of the concept, and Tigersonalex’s Sonic Red Ridge has now joined their ranks as another excellent example of the idea, albeit with its own twists that make it feel quite different.