Unlocked from the start are Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna and Amy Rose. Doctor Robotnik can be unlocked by winning the final course. Metal Sonic, Tails Doll, Metal Knuckles and Eggrobo can also be unlocked by satisfying certain conditions within the races. Super Sonic replaces Sonic on the roster once all 7 Chaos Emeralds are found.
As well as the playable characters, a flock of Flickies are seen flying away from the course at the start of the race.
Five courses are included in the game; Resort Island, Radical City, Regal Ruin, Reactive Factory and Radiant Emerald (all beginning R). None of the Zones have featured within the pages of Sonic the Comic as of yet, although the Resort Island Zone has been mentioned in the Breaking News ticker.
Sonic the Comic adaptation
Sonic R has never featured as a Sonic the Comic story to date. However, the characters share some similarities. Metal Knuckles makes his first appearance and is more than a passing resemblance to third Metallix model, although both are just a Metal Knuckles. Eggrobo appears in a game for the first time since Sonic & Knuckles. Similarly, the character has only been seen in STC as part of the Sonic 3 & Knuckles story arc.
The closest STC has got to adapting Sonic R is in the Sonic the Comic Online story Monsters on the Miracle Planet!. In this, many Tails Dolls begin to malfunction once they reach the Miracle Planet. Amy Rose learns they are actually Badniks disguised as toys and has to deal with them before she can return home. The rest of them are left to G.U.N. to fend off.
Sonic R has never been reviewed by an STC reviewer so doesn't have an official score.
- Sonic R is made by Travellers Tales, the same company behind Sonic 3D.