If you have already played and finished the game, you will have to delete the file "firstrun" in the "game" folder inside the game's files. If you haven't played and finished the game, why the heck are you reading this?

In order to launch the game, you will have to launch the game.

When the game launches, it will ask you if you want to delete your progress. Confirm the reset. The game should restart entirelly.

As you have entirelly reset the game, it will requiere you to go through confirming you are at least 13 years of age and consent to exposure to disturbing content again. Just go through the dialogue, click the button, go through more dialogue and you should be in the main menu.

Go to the game's files and locate the "characters" folder. Delete monika.chr, then go to the Windows trash bin and delete it there.

Press the "New Game" button in the main menu to start a new game.