The Pacifist's Great and Final Nightmare does not include an in-game tutorial. To move the player in this game, the keyboard's "W", "A", "S", "D" or arrow keys are used. To change the player's view in this game, the computer mouse is used. The menu screen provides a "controls" section that allows some gameplay buttons to be changed. Some things in this game's levels can be used or picked up. The cursor in the middle of the screen changes into a bigger circle with a hole if the cursor is close to an object that can be used or picked up.
The Pacifist's Great and Final Nightmare is a game with a story about a pacifist who has been tricked into entering a strange building. The pacifist, who is an adult male, received a convincing phone voicemail apparently from a man who desperately asked for help and claimed that there was an emergency. The phone voicemail ended after it gave directions to a location where help was needed. The pacifist panicked and rushed to the location that the urgent voicemail described. After he arrived at the scene that the voicemail mentioned, the pacifist encountered a horrifying creature so he ran for his life. The pacifist barely escaped into an elevator but he lost his phone when he ran as fast as he could. How will the pacifist stay true to his lifelong and peaceful ideals in the frightening times ahead?