PC version Fans have made a PC version. Some are still early, so read the project page first.
Fans took Sonic Free Riders apart and rebuilt it so it runs natively on a computer, often with widescreen, higher frame rates and mods. Here is the project we know about:
Unofficial static recompilation of Sonic Free Riders for Windows, Linux and Android, with controller/keyboard support, custom VRM avatars, and Kinect v1, Kinect v2 (experimental) and webcam motion controls on Windows.