If you're a fan of the old-school classic Sonic the Hedgehog and looking for a Roblox game that draws inspiration from the same universe, Sonic Speed Simulator is the perfect game.

When players begin Sonic Speed Simulator on Roblox, they'll find that they can't play as Sonic right away and that he takes some grinding to unlock.

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: ...

Players have to unlock the new characters in the game to enjoy them. The Sonic Speed Simulator has quite a large open world for the players so that they don’t get bored while playing the game.

Earlier today Sega announced a partnership with Gamefam to bring Sonic to Roblox in the brand-new game, Sonic Speed Simulator.

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