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 favorite ...

In Sonic Speed Simulator, players race against their friends as their own avatars or as Sonic characters across locations from the Sonic universe, including Green Hill Zone. As they roll around at the ...

In it, Sonic runs and collects rings while different Chao characters trail behind him. The game keeps track of your level and speed as Sonic runs through an area. A few of the five planned worlds ...