Sonic Speed Simulator is an official Sega game on the Roblox platform. In Sonic Speed Simulator, you'll be zipping around at the speed of sound, unlocking different characters from the Sonic ...

Roblox Sonic Speed Simulator is a running game where you will be building up your top speed so that you can go fast! The game ...

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