In order to unlock Sonic the Hedgehog himself, newcomers to Sonic Speed Simulator will need to adjust to a rather slow speed at the start of the game. As they make their way through the Green Hill ...

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 ...

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 ...