How to Unlock Debug Mode Unfortunately, the first time you play Sonic Mania, Debug Mode will not be unlocked. Doing so requires that you play the game and complete Blue Sphere stages.

One Knuckles isn't enough for you? Here's two. Learn how to unlock "& Knuckles" mode in Sonic Mania with this quick guide.

What would a retro-style Sonic the Hedgehog game be without ’em? Dedicated players can unlock new moves, a debug mode, level select menu, full version of Mean Bean Machine, and more!

Complete bonus stages to unlock tons of awesome modes and moves in Sonic Mania -- including an insta-shield, Debug Mode, and more.

These are Sonic the Hedgehog series staples and are present in Sonic Mania. On the PlayStation 4, Debug Mode unlocks under Secrets after earning Bonus Stage silver medals.