From PDAmill Game Studios:
Flux Challenge is set in the future where underground tunnels are used for racing. These tunnels were originally used for trains and transportation but then someone figured out how to use the tunnels for levitating racing vehicles and the sport was born. At some point in the sport's early history one of the heroic drivers was killed in an accident while racing. This prompted shutdowns of the tracks and they were made safer. The new tracks had a three level system, practice, time trials and career. In practice mode you can race any unlocked track with any unlocked vehicle so you can hone your skills for career or timed mode. In timed mode you can try and beat your best times to post to the record books. In career mode you are given the chance to rise to the ultimate racing title, Flux Champion.
Version 3.2 may include unspecified updates, enhancements, and bug fixes.