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

Here are all working Sonic Speed Simulator codes as of 28th August 2025: Not sure how to redeem codes in Sonic Speed Simulator? Here’s what you’ll need to do: ...

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!