When exploring the dream world, Madotsuki will occasionally come across strange occurrences or activities, known as 'Events'. These make up most of the memorable content of the game and provide intriguing perspectives of the dream world. Many theories are developed to attempt to explain what the events represent, if anything.
Some events happen as a result of a specific trigger (E.g. Madotsuki interacting with an object, such as the TV in her dream bedroom), whereas others (such as Uboa or Takofuusen) occur on a random chance when a certain action is performed.
Location: The Number World
Prompt: Trigger. Stab the Toriningen in the bed room with the knife effect to turn her 'lunatic', then allow her to catch you. You will be randomly transported to one of two different enclosed spaces where the event occurs, with an equal chance of either.
Description: In the Number World room, stepping on the tile with the 'あ' character (The alphabetical character for "A" in Hiragana) will cause the whole floor to become flooded with あs.
In the lamp world the effect is the same, except the graphic is apparently that of a red eye in the floor, not an alphabetical character.
Crick in the Neck
Location: Madotsuki's Room
Prompt: Random Chance. Determined when Madotsuki wakes up.
Description: Occasionally, when Madotsuki gets out of bed she will have a 'crick' in her neck, causing her head to be constantly turned to the left. In this state, she is unable to write in her diary or play NASU, and has no choice but to go back to sleep. The effect will wear off when she falls asleep again.
The Falling Man
Prompt: Random Chance. Determined when Madotsuki sets foot on the Stairway to the Sky.Description: An object resembling a person appears in the sky in the distance. It spins as if falling downward, however the figure moves in a circular motion and never actually hits the ground. There is an extremely low chance of witnessing two 'falling men' at once.
Location: The empty basement room of the dungeon in FC World A.
Prompt: Random Chance. 1/3 chance of availability, determined when Madotsuki falls asleep. In the FC World Dungeon, travel to the deepest room. Unlike the others, this room is fully lit. Stand in the top-left corner of the room and interact with the west wall.
Description: When interacted with, the wall tile produces a text box with a 'typing' sound like the Lizardmen, but no text is shown. Doing this repeatedly gradually causes the room to corrupt, until the game eventually 'crashes' with a nasty stuttering sound. This causes Madotsuki to wake up.
Note that despite the event name, this is not an actual glitch and is intentionally programmed to happen.
This event is possibly a homage to two glitches found in Earthbound, the game which the FC World seems to be based on:
Location: The Blazing Corridor, in The Underground World
Prompt: Random Chance. 1/5, Dependent on the random allocation of the Bed in the dream world which takes you to The Staircase of Hands.
The first step for witnessing this event is to go to the Snow World and become a snowman using the Hat and Scarf effect.
Next, find the bed and sleep in it as a snowman. If it does not take you to the Staircase of Hands, you must pinch yourself awake and try again.
Once you have arrived in the Underground World, stand as close as you can to the fire in the Blazing Corridor.
Description: Once You have arrived at the fire as a snowman, all you must do is wait as Madotsuki slowly melts away. Once completely melted, she cannot move and must return to the normal hat and scarf form.
Unfortunately, it is not possible to simply transform using the Yuki-onna snow as that does not cease after becoming a snowman, so it will persist in the Underground World and douse the fire. It is for this reason that the Snow World snowfall must be used.
Location: Madotsuki's Room
Prompt: Trigger. Interact with the Famicom in Madotsuki's Bedroom.
Severed Heads in the SkyLocation: White Path 3 in the White Desert
Prompt: Trigger. Walk into the small building at the end of the path.
Description: A severed head floats through the sky near the top of the screen.
Location: The White Desert (A or B)
Prompt: Random Chance. 1/3600 chance of appearing when you take a step.
Description: Takofuusen appears, floats past the screen making an odd sound, and is gone.
Location: Poniko's House, in the Pink Sea
Prompt: Random Chance. 1/64 chance of occurring when Madotsuki switches off the light, determined when she enters the house.
UFOs on Mars
Location: The Martian Summit, Mars
Prompt: Random Chance. 1/4 chance of appearing when Madotsuki meows with the Cat effect on the Martian Summit.
Description: Strange objects appear from the sky and hover in the air when called repeatedly with the Cat effect. More than 10 can be made to appear with repeated meowing. A similar object is seen over the distant city from the Eastern edge of the Sky Garden.
The Witch's Flight
Location: The Mall Rooftop
Prompt: Trigger. Equip the witch effect, mount the broom and fly off the edge of the roof.
Description: Using the Witch effect and flying to the right side of the building will yield a flash. After the flash, you are able to control Madotsuki flying 2D arcade style through the clouds. Press 1 to cause the broom to disappear mid-flight, causing the screen to black out. The dream then ends prematurely with Madotsuki lying on the floor. There is also a Black cat on top of the roof, its purpose is unknown, but eye color changes when using the Knife effect.
There are a number of events that can be found in the dream world of Yume Nikki that stop the action of the game and show full-screen pictures and/or music, similar to cutscenes in traditional games. Some of these events continue for a determined amount of time, whereas others must be dismissed by the player.
Location: The Rave Box, in the Wilderness
Prompt: Trigger. Interact with the hollow Rave Box.
Description: One of the most popular events is the "Aztec Rave Monkey" that appears when Madotsuki looks into a conspicuous hollow totem sculpture found in a certain area of The Wilderness. It shows the many iterations of a certain design repeated often throughout the game, that of an Aztec-style monkey-like image with four faces. A synth beat plays during this scene.
Location: The Sewers
Prompt: Trigger. There are several apertures in the walls of the sewers that lead to Big Red. Interacting with them causes several drawings to appear. More on these in the link above.
Location: Madotsuki's Balcony
Description: WARNING: Spoiler, see The Ending for details
Location: The Staircase, in the Number World
Prompt: There is a chance that the zipper wall on the south-east corner of the number world will, unlike the usual zipper walls, be discoloured and have an angry/sad expression on it instead of the usual smile. Stabbing it when in this state causes it to bleed and reveal a pathway, similarly in fashion to the Guillotine Room. The pathway then leads to KyuuKyuuKun's Room.
Description: "FACE" is an event that occurs when Madotsuki opens the door at the top of the Stairway, in the Number World. Known as the Red King (jp:赤の王様 ) in Japanese, FACE appears when one exits the stairway which is accessed from the Number World. It is often associated with KyuuKyuu-kun and used as evidence by some fans to support the theory that Madotsuki has some kind of trauma involving penises. The interpretation of FACE being a penis head further expresses this. This animation cannot be skipped and continues for approximately ten seconds before Madotsuki awakens abruptly.
The KALIMBA TV Channel
Location: Madotsuki's Dream Room
Prompt: Random Chance. 1/7 Chance of appearing when the TV is switched on in Madotsuki's Dream Room.
Description: When the event has been activated, the TV sprite will show the face of one of the 'Kalimba creatures'. The screen then fades to black and two oppositely-scrolling rows of tribal African-stylized figures are shown. The figures appear to be armless humanoids with their heads tilted sideways and long, zigzagging tongues spilling from their mouths. During the event, a tribal/electronic rhythm plays on a short loop. The name comes from both the background music track and the image files being labelled as 'KALIMBA' in the game's coding, after the instrument and artwork used in the event.
Location: Monoe's Tunnel in the White Desert
Description: A detailed close up of her fades in briefly as she vanishes, teleporting randomly to another position in the room.
Location: White Desert
Prompt: There is a path that leads directly east/west within the White Desert that terminates/begins at a cave. Within this cave is an unassuming monochromatic young girl. Using the Stoplight effect, however, causes her NPC to transform from a normal girl into a five-armed one. Interacting with her in this state triggers the event.
Description: Monoko has a full-screen event in which a drawing of her bounces around the screen and changes size. A tribal sounding beat plays over this sequence.
The Spaceship Crash
Location: The Spaceship
Prompt: Random Chance. When Madotsuki gets into bed on the Spaceship, there is a 1/6 chance she will fall asleep and the event will occur.
Description: Madotsuki awakens to the sound of an alarm going off. When she gets out of bed, the red emergency lights are flashing and the Spaceship is losing altitude. Masada will be panicking at the piano, and after about 15 seconds a cutscene of the ship crashing on Mars will play.