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 players can earn Nine's Mechanical Arms for free by taking part in an event in the Sonic Speed Simulator game.

How to unlock Shadow the Hedgehog in Sonic Speed Simulator? Shadow the Hedgehog can be unlocked by completing the Release Shadow mission set, which includes five objectives.