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.

Image Source: Roblox Corporation via Twinfinite Lastly, if you put some serious time in Pet Simulator X and have huge pets you left behind, you can transfer them into Pet Simulator 99.

Chest Simulator is a newer Roblox release, but but it already boasts quite a lot of useful codes.