Red Star Rings are the main currency of Sonic Speed Simulator on Roblox. They are used for everything from fusing Chao and Trails, purchasing and leveling up Characters, getting sets of your ...

Sonic Speed Simulator for Roblox adds new characters every other update, and Knuckles the Echidna wraps up the classic character roster nicely.

Roblox Sonic Speed Simulator has some special codes to help you do all that you want to do in the game, find them here!

Sonic is getting an official game on Roblox and it has Chaos! The “speed simulator” was made by Sega of America and Gamefam and allows you run around as Sonic, Tails, and Knuckles.