However, you need to locate and complete a number of specific tasks in all corners of the open world game's areas to access that island's completed map. Unlocking parts of the Sonic Frontiers map ...

(Sonic & Knuckles) Cheat: Debug Mode when Linked to Sonic 3 First go to Angel Island Zone and, while on a vine, press Left, Left, Left, Right, Right, Right, Up, Up, Up. If it has been entered ...