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 is a running game where you will be building up your top speed so that you can go fast! The game is chock full of Sonic the Hedgehog based levels and characters, where ...

Here's how to get 6-Star Fast Friends in Roblox: Sonic Speed Simulator! With so many uses, you might find your pockets empty of Red Star Rings - and we're here to help!