Console mode
"Console mode" or "cheat mode" can be accessed by clicking on the C button instead of the Launch button when you open the game:
With console mode enabled, you can fly around, no clip, speed up & slow down time, heal, quick save anywhere, and input console commands. How to do all of that is documented here: https://whiteday.fandom.com/wiki/Console_Commands It's also documented within the whiteday directory itself: \whiteday\console\
Console mode can be VERY buggy! The game can crash sometimes at random, so it's not viable to play through the whole game using it. It's great for messing around though.
To enter commands into the console you will need to use a Korean keyboard, which you can add in Windows settings. It's a bit of a pain but with some understanding of the Korean alphabet (hangul), and this reference, you should manage:
Zombie mode
There is also "zombie mode", which makes you invincible. It's a glitch where you quick save (key '5' in console mode) right after taking a fatal hit (while you're collapsing on the floor), then load that save. No hits register, and it's impossible to game over, but you can proceed through the game as normal. That save and any save you make thereafter is then 'tainted' with zombie mode, and will persist no matter where you go.
It is possible to achieve zombie mode without quick saving, but I haven't managed to get it to work. You need to lure the janitor to a load zone, select 'remain here', then wait for him to kill you while you stand in the loading zone. Right after taking a fatal hit, the option to load into the next area will reappear. Click to load into the next area, and make your way to the nearest notepad to save the game. Reload the save and heal.
Save files
I have a save file repository which includes some zombie mode saves as well as saves that have all items: https://mega.nz/folder/G1pxWYQD#1ORGceBun2_JcMz9AeolqA
To use them, put them in the saves folder, and rename them to 'wsav0.sav', 'wsav1.sav', etc. depending on what save slot you want the file to appear in. if you're using emuyia's version of White Day (version 17.0, downloaded from moddb), you can get to the saves folder with this button:
Otherwise, you can find the save file directory in two locations, depending on whether you're running White Day in administrator mode or not. For non-admin, it's located in %localappdata%\VirtualStore. For admin mode, it's inside the main whiteday directory.
Useful easter eggs & secrets
There are various easter eggs and secrets you can abuse, which are detailed here: https://whiteday.fandom.com/wiki/Cheats_in_White_Day:_A_Labyrinth_Named_School
Some are also detailed in the whiteday directory: \whiteday\console\
