Sonic Mania Plus is just full of mysteries, and now you can play around with even more hidden features with these Sound Test “cheat codes” — maybe they’re closer to Easter eggs, because most of these effects aren’t going to help you beat the game. They will totally change some factors. They’re all weird, silly, or fulfill a long-demanded fan request (yes, you can finally disable Super Sonic’s music) — basically, it’s Sonic Mania Plus in a nutshell.

These particular codes were shared by Youtuber extraordinaire GameXplain. There are more codes, some that still haven’t been quite identified, discovered by the Sonic Maniacs over at Sonic Stadium. This is an awesome find, and one that’s well-worth trying out if you’ve already dug deep into the many, many secrets / Easter eggs of Sonic Mania. And don’t worry — these codes work in Sonic Mania and Sonic Mania Plus.

For more Sonic Mania secrets and stuff, check out the many, many guides published right here on Gameranx. You can also see what’s new (that isn’t a secret) in Sonic Mania Plus with our complete features rundown.

A throwback to the 90s wouldn’t be complete without some actual cheats, and Sonic Mania does not disappoint in that regard, coming complete with a debug mode, level select and a slew of cheat.

More Sonic Mania guides on Gameranx:

How To Use New Sound Test Cheat Codes Easter Egg Guide

The cheat codes are available in Sound Test mode, and will work in both Sonic Mania and Sonic Mania Plus.

How To Access The Sound Test Board

• Start up “Mania Mode” from the menu and select a “No Save” run.
• Go to Options in Mania Mode -> Enable Debug Mode
• Next, you need to enter the Level Select screen. To do this:
  • Hold [Nintendo Switch: Y / PS4: Square / XBO: X] and enter “No Save”
• Welcome to the Level Select menu! From here, you can access the Sound Test board.

From Level Select, you’ll be able to use the Sound Test function — by testing certain sounds in a series, you’ll activate one of the following cheat codes. These cheats can be activated all at the same time, and can have some strange effects if you toggle them all on. Let’s go down the list.

Sound Test Chests List

• Unlock all Emeralds
  • Code: 4 1 2 6

• Unlimited Continues
  • Code: 1 9 9 2 1 1 2 4

• Toggles On Encore Mode
  • Code: 2 0 1 8 0 6 2 3

• Always-On Super Sonic Flight (Standard Levels, Don’t Need To Activate!)
  • Code: 2 0 1 7 0 8 1 5

• All Sonic Abilities Unlocked (Super Drop Dash, Insta-Shield, Etc)
  • Code: 9 0 0 1

• Toggle Off Super Sonic Music (Super Sonic Music Doesn’t Replace Standard Level Music!)
  • Code: 0 0 0 0 6 2 1 4

• All Animals Turn Into Squirrels
  • Code: 3 3 3 1 9 7 9 0 8 1 1

• [Currently Unknown!]
  • Code: 1 9 8 9 0 5 0 1

Additional Source: [1]

Jump to any level from the Title Screen in Sonic Maniawith these cheat codes — just input a certain combination of buttons on the Nintendo Switch and you’ll warp straight to a level select screen. There’s more than just levels to select here too. Unfortunately, on PS4 and Xbox One, it’s a little more complicated than that.

Level Select and cheats are a long-running staple of the classic Sonic games, and Sonic Maniac isn’t about to forget those old-school accruements. There’s even a Sound Test, so you can listen to the music or sound effects. Scroll to the bottom-right corner of the Level Select to choose “Sound Test” and give the whole OST a listen. See how to enter Level Select on every platform with the quickie guide below, and don’t miss all the other Sonic Mania guides on Gameranx.

Polybius rom. More Sonic Mania guides on Gameranx:

How To Access Level Select Cheat Code List

NOTE: After completing the game, you can select any standard level from the save menu. That isn’t the same as the Level Select, and isn’t quite as powerful — there are totally unique things you can do with the Level Select screen.

To access the Level Select, input the following buttons from the Title Screen.

• Nintendo Switch: Y+B

On PS4 & Xbox One, the process is more complicated. Open Mania Mode -> Secrets -> Debug Mode: ON. You’ll need to unlock Debug Mode by completing Bonus Stages to access the Level Select. The more medals you earn for completing Bonus Stages, the more extra secret features you’ll unlock in the Secrets menu.

• While highlighting a “No Save” file in Mania Mode
  • PS4: Square+Options
  • Xbox One: X+Menu

The Level Select menu includes lots of cool stuff, including a Sound Test and both Special Stages. Now you can replay levels in any order you want, listen to some music, experience the true final boss without getting all the Chaos Emeralds, and generally have a good time. You can even play as Tails / Knuckles for the secret final boss!