Submitted by: David K.
To use cheats such as alternate modes, And Knuckles and Debug, you must
go into Mania Mode and hover over the No Save icon on the right. Next,
press Triangle (or Y on Xbox, or X on Switch) to activate these options.
-=Here is how you use each mode=-
* And Knuckles will add Knuckles as a second character, even to Knuckles!
* Debug is activated by pressing Triangle (or Y on Xbox, or X on Switch),
then the jump buttons to place and rotate through options.
* Manias move is a Drop Dash (hold jump in the air), Sonic CDs by
holding Up then jump, and Sonic 3 and K Insta-Shield by pressing
jump in the air.
Finally, theres Level Select, which interestingly works in a variety
of ways and differs from platform-to-platform:
Sonic Mania PC Level Select: Select the No Save option on the far right
of Mania Mode with Debug Mode enabled, then the Q and A keys together.
At the title screen, quickly press [Up] [Up] [Down] [Down] [Up] [Up] [Up] [Up]
to enable Debug mode. Alternately, collect any 16 Silver or Gold medals from
the Blue Sphere special stages to unlock Debug mode. Then, select Mania mode,
highlight "No Save", choose the "Secrets" option, and enable Debug mode.
Once Debug mode is enabled using either method, hold the keys assigned to
[Delete] and [Jump] while "No Save" is highlighted in Mania mode to access the
Debug menu. This menu allows you to select any level (including special stages),
Sound Test, and fight the secret final Boss without getting all Chaos Emeralds.
You can even play as Tails and Knuckles against the secret final Boss.
To switch characters, press [Delete] or [Jump] while "Sound Test" is highlighted.
You can also add Tails to Sonic under "Sound Test". Additionally, play the
indicated music tracks in the listed order under "Sound Test" to enable the
corresponding cheat function.
Info: If you entered the code correctly, you will hear a sound.
Infinite continues: 01, 09, 09, 02, 01, 01, 02, 04
Start with all Chaos Emeralds: 04, 01, 02, 06
Start game in Encore mode: 02, 00, 01, 08, 00, 06, 02, 03
Enable all special moves for Sonic (Drop Dash, Insta-Shield, Peel-Out): 09, 00, 00, 01
Enable flight when in Super form (press [Jump] twice): 02, 00, 01, 07, 00, 08, 01, 05
Change all small animals to squirrels: 01, 09, 07, 09, 00, 08, 01, 01
Disable Super Sonic theme when transformed: 06, 02, 01, 04
Unknown: 01, 09, 08, 09, 00, 05, 00, 01
Enter the "Cheat mode" code. At the level select screen, choose the final Boss
option and play as Knuckles. Defeat the true final Boss as Knuckles to view a hidden
ending. There will be a picture of Knuckles reading a book called "Sonic Mania &
Knuckles" to the animals, with Sonic and Tails in the background.
Alternatively, play &Knuckles mode with Knuckles.