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    Revision as of 02:21, 10 July 2024 by ZASNK (talk | contribs) (start the video playlist thing, i dont have time to finish it tonight sorry)
    Effect eggs in the Nexus.
    The effects as they appear in the manga.

    The main objective in Yume Nikki is to collect the 24 effects found throughout the dream world. Some effects grant unique abilities that can be used to access certain events or locations; the rest are mostly cosmetic.

    Effects are found by interacting with objects or certain characters. All effect-givers are unique, each appearing only once in the dream world. They can be collected in any order, except for the Poop Hair effect, which requires either the Yuki-onna or Umbrella effect first. It is also recommended to get the Lamp effect early, as a couple other effects require passing through dark areas.

    A playlist of effect guides on YouTube, created by BuyoBuyo.

    Effects can be dropped in the Nexus by pressing 5. They appear as eggs and are removed from the menu. Once all 24 effects are dropped, the player can access the ending.

    The names used for effects come from the Uboachan fan translation, due to its historic use by most (English-speaking) players. The original Japanese and/or official translation names are stated below each header.




    Frog Egg.png

    Become a frog / Transform into a frog.

    Appearance: Madotsuki transforms into a humanoid frog, walking with a hunched-over back.

    Passive Effect: Madotsuki walks at normal speed through water.

    Action: (1) Madotsuki hops in place like a frog.

    Location: Either Forest World or Dense Woods B (Frog Path) - Interact with the Frog.

    Practical Uses: Walking through the Pink Sea and Uboa's Trap is much faster, although the Bicycle does the same thing.



    Umbrella Egg.png

    Open an umbrella / Use an umbrella.

    Appearance: Madotsuki holds a red umbrella.

    Passive Effect: It rains, which continues until Madotsuki unequips the umbrella into her normal form. The rain also enables the Demon effect to produce a clap of thunder and lightning.

    Action: (1) Madotsuki spins the umbrella.

    Location: Puddle World - Pick it up off the ground.

    Practical Uses: Can be used to douse the fire in the Blazing Corridor of Underground World, although the Yuki-onna effect does the same thing. Can be used to stop the rain in the Dense Woods A if the effect is equipped and then unequipped.

    Madotsuki extinguishing the Blazing Corridor's flames with the Umbrella effect.

    Hat and Scarf

    Hat & Scarf(ぼうしとマフラー)

    Hat and Scarf.png
    Hat and Scarf Egg.png
    Hat and Scarf 2.png

    Wear a hat and scarf / Don a hat & scarf. 

    Appearance: Madotsuki wears a hat and scarf.

    Passive Effect: In the snowman form, Madotsuki cannot pinch herself awake due to her lack of arms, and she walks twice as slow.

    Action: (1) When snowing, Madotsuki transforms into a snowman.

    Location: Block World - Pick it up off the ground.

    Practical Uses: Interacting with Mafurako in Block World as a snowman will always teleport you back by her side when returning from an upper area. In the Blazing Corridor, standing next to the fire as a snowman will cause Madotsuki to slowly melt and become immobile.


    Snow Woman(ゆきおんな)

    Yuki-onna Egg.png

    Become the snow woman / Morph into a Snow Woman.

    Appearance: Madotsuki transforms into a Yuki-onna.

    Passive Effect: It snows, which continues until Madotsuki unequips the Yuki-onna effect into her normal form. This enables you to use the Hat and Scarf effect's transformation in any area.

    Action: None.

    Location: Snow World - Interact with the Yuki-onna.

    Practical Uses: Can be used to douse the fire in the Blazing Corridor, although the Umbrella does the same thing. Can be used to stop the snow in Snow World if the effect is equipped and then unequipped.


    Kitchen Knife(ほうちょう)

    Knife Egg.png

    Wield a kitchen knife / Equip a kitchen knife.

    Appearance: Madotsuki holds a knife.

    Passive Effect: Mobile NPCs will run away from her. Most characters that can't move will animate faster, as if in panic.

    The Stabbing Room, which is easily traversed with the Knife effect.


    • (1) Madotsuki switches the knife between her hands.
    • (Z) Madotsuki stabs with the knife, killing or wounding characters. Some characters and objects react strangely or cause something to occur after being stabbed, including:
      • Toriningen - Will turn into their 'lunatic' form if they weren't already, and will begin chasing Madotsuki.
      • Mars-san - Its eye changes color and a small wound appears on its foot.
      • Onsen-san - It completely changes color and stops drinking its water.
      • Pain Blob - Shows its face.
      • Arms and Legs in the White Desert Path - They twitch.
      • Eye Box - Has a 1 in 30 chance of taking you to the Eye People section of the White Desert. The same condition and chance applies to going back to White Desert A.
      • Dave Spector - Stabbing the southwest one grants access to other White Desert areas in the tunnel it wanders by.
      • Henkei Shita - The one in Hell has a 1 in 256 chance of transporting you to the Footprint Path A.
      • Extinguishes candles in Candle World.
      • Makes the eyeballs change color in Eyeball World.

    Location: Dark World - Pick it up off the ground.

    Practical Uses:

    • Killing/wounding NPCs.
    • Scaring NPCs away from you - can be used to move NPCs that block your way.
    • Interacting with the environment.
    • Obtaining money by killing NPCs.
    • Accessing new areas.


    Eye Palm(めだまうで)

    Medamaude Egg.png

    Become Medamaude / Warp into an Eye Palm.

    Appearance: Madotsuki's head becomes a giant hand with an eye in its palm.

    Passive Effect: None.

    Action: (1) Madotsuki closes her palm and teleports to the center of the Nexus.

    Location: Eyeball World - Interact with Medamaude.

    Practical Uses: Can be used to teleport back to the Nexus quickly and escape from traps (such as being caught by a Toriningen or Uboa) without having to pinch yourself awake.

    Notes: When Madotsuki pinches herself, you can notice a little teardrop.



    Fat Egg.png

    Get fat / Balloon in size.

    Appearance: Madotsuki becomes fatter.

    Passive Effect: None.

    Action: (1) Madotsuki's belly rumbles and an emote appears.

    Location: Docks B - Interact with Strober.

    Practical Uses: None.



    Midget Egg.png
    Maximum number of Madotsuki midgets

    Become small / Shrink in size.

    Appearance: Madotsuki becomes very small.

    Passive Effect: Madotsuki can fit through certain small entrances.


    • (1) Madotsuki produces another midget which walks in sync with her. She can produce up to 7 midgets at once.
    • (3) One of the cloned midgets will scream and burst in a small spray of blood.

    Location: Candle World - Catch and interact with the Dwarf.

    Practical Uses:



    Flute Egg.png
    Effect flute.png

    Play a flute / Brandish a flute.

    Appearance: Madotsuki holds a flute to her lips.

    Passive Effect: None.

    Action: (1) Madotsuki plays a short, four-note tune. There are five different tunes that are chosen randomly.

    Location: The music room in the Mall - Pick it up off the floor.

    Practical Uses: None.



    Neon Egg.gif

    Become a neon light / Glow like a neon sign.

    Appearance: Madotsuki glows in neon colors.

    Passive Effect: None.

    Action: (1) Tints the screen with a bright color. The tint is removed when the effect is unequipped or changed. Repeating the action cycles the color between red, blue, yellow, and violet.

    Location: Neon World - Interact with the Neon Parrot.

    Practical Uses: None.


    Faceless Ghost(のっぺらぼう)

    Nopperabou Egg.png

    Become the faceless ghost / Materialize as a faceless ghost.

    Appearance: Madotsuki becomes a Noppera-bō.

    Passive Effect: None.

    Action: (1) Madotsuki's head jumps off her shoulders and spins around.

    Location: The dead-end of the Sewers - Interact with the Nopperabou Ghost.

    Practical Uses: None.

    Severed Head


    Severed Head.png
    Severed Head Egg.png

    Become a severed head / Be reduced to a severed head.

    Appearance: Madotsuki becomes a severed head.

    Passive Effect: Madotsuki's height and speed decrease. She also cannot pinch herself awake due to her lack of arms.

    Action: None.

    Location: Guillotine World - Interact with the Guillotine.

    Practical Uses: Allows Madotsuki to see Closet Madotsuki, as her normal height blocks the view.



    Towel Egg.png

    Wrap up in a towel / Wrap yourself in a towel.

    Appearance: Madotsuki has a towel wrapped around her.

    Passive Effect: None.

    Action: (1) Madotsuki sneezes.

    Location: Infinite Wilderness - Interact with Ittan-momen.

    Practical Uses: None.



    Cat Egg.png
    Cat Madotsuki meowing, revealing her red eyes.

    Grow ears and a tail / Sprout cat-ears and a tail.

    Appearance: Madotsuki grows cat ears and a tail.

    Passive Effect: None.

    Action: (1) Madotsuki faces downwards and meows like a cat, with large red eyes. She paws the air with her right hand and holds a koban coin in her left, resembling a Maneki-neko.

    Location: Shield-Folk World - Interact with Nekoin.

    Practical Uses:

    • Attract NPCs - Can be used to move NPCs that block your way or find NPCs hidden in the area.
    • Provoking a reaction from certain NPCs and the environment.
    • Summons UFOs at the top of Mars.

    Notes: In most cases, this allows you to move characters out of your way without using the Knife effect to kill them. This may be in tune with the Maneki-neko being loosely associated with Guanyin, who is revered in Japan as Kannon (観音), the goddess of mercy and compassion. Maneki-neko with their left paw raised are also said to bring in people or customers, thus why it attracts certain NPCs.

    The Cat effect attracting UFOs to Mars.



    Lamp Egg.gif

    Become a lamp / Change into a lamp.

    Appearance: Madotsuki's head transforms into a lamp.

    Passive Effect: When the light is on, dark areas are fully lit, improving visibility.

    Action: (1) Switches the light on and off.

    Location: Lamp World - Interact with the Walking Lamp.

    Practical Uses:

    Madotsuki lighting up Dark World with the Lamp effect.



    Bicycle Egg.png
    Madotsuki Bicycle.png

    Ride a bicycle / Mount a bicycle.

    Appearance: Madotsuki rides a bicycle.

    Passive Effect: Madotsuki's speed is doubled.

    Action: (1) Madotsuki rings the bicycle's bell.

    Location: Graffiti World - Pick it up off the floor.

    Practical Uses: Can be used to travel through the dream world much faster than by walking, catch fast-moving characters like the Dwarf and Nekoin, and escape from lunatic Toriningen.

    Long Hair


    Long hair.png
    Long Hair Egg.png

    Grow long hair / Grow long hair.

    Appearance: Madotsuki's hair becomes longer.

    Passive Effect: None.

    Action: (1) Madotsuki sits down (same as default).

    Location: Mural World - Interact with the long-haired Mouth Monster.

    Practical Uses: None.

    Poop Hair

    Poo Hair(ウンコヘアー)

    Poop hair.png
    Poop hair Egg.png

    I certainly hope it's hair / Grow poo hair.

    Appearance: Madotsuki's hairstyle is done up to resemble poop. At least we hope so.

    Passive Effect: None.

    Action: (1) Madotsuki drops a fly which buzzes around in place.

    Location: Underground World Storage Room - Interact with the poop-haired Mouth Monster.

    Practical Uses: Can be used to mark locations for a short time, though only in the same room/area.

    Blonde Hair


    Blonde hair.png
    Blonde hair Egg.png

    Grow long, golden hair / Glow long blonde hair.

    Appearance: Madotsuki's hair becomes long and blonde.

    Passive Effect: None.

    Action: (1) Madotsuki sits down (same as default).

    Location: Mural World - Interact with the blond-haired Mouth Monster.

    Practical Uses: None.

    Triangle Kerchief

    Spirit Headband(ずきん)

    Triangle Kerchief.png
    Triangle Kerchief Egg.png

    Wear triangle kerchief / Put on a Spirit Headband.

    Appearance: Madotsuki wears a triangle kerchief as a tiara, symbolizing death in Japanese culture.

    Passive Effect: In the 'ghost form', Madotsuki is invisible to NPCs.

    Action: (1) Madotsuki transforms into an 'invisible' ghost and becomes translucent.

    Location: Ghost World - Catch and interact with Fleebie.

    Practical Uses: When in 'ghost form', lunatic Toriningen can be avoided as Madotsuki is invisible to them, but they will trap her if she interacts with them intentionally.

    Madotsuki safely close to two Toriningen thanks to the Triangle Kerchief effect.



    Witch Egg.png
    Witch Broom.png

    Become a witch / Become a witch incarnate.

    Appearance: Madotsuki becomes dressed like a witch, with a pointed hat and robe.

    Passive Effect: None.

    Action: (1) Madotsuki mounts a broom and floats a short distance from the ground.

    Location: Witch's Island - Interact with Kimajo.

    Practical Uses: Can be used to fly off the Mall Rooftop. Pressing Z returns to the rooftop, and pressing 1 dismounts the broom in midair, causing Madotsuki to fall out of bed and wake up.



    Demon Egg.png

    Become a demon / Reconstitute as an oni.

    Appearance: Madotsuki transforms into a Demon. Her skin turns red, horns appear on her head and she wears some sort of animal skin.

    Passive Effect: None.

    Action: (1) When it's raining, a clap of thunder and lightning can be produced.

    Location: FC Basement - Interact with the FC Demon.

    Practical Uses: Can be used to summon the FC Demon in the Pyramids area of FC World B any time the area is entered with the effect equipped, giving a warp to the FC Demon's room in FC House. Without the effect, it is normally a 1 in 8 chance.

    Buyo Buyo


    Buyo buyo Egg.png

    Body becomes soft and squishy / Change into a squishy blob.

    Appearance: When Madotsuki walks, she wobbles around like jelly.

    Passive Effect: None.

    Action: (1) Madotsuki wobbles up and down.

    Location: FC World B - Interact with Buyo Buyo.

    Practical Uses: None.


    Traffic Light(しんごう)

    Stoplight Egg.png
    Effect Stoplight Red.PNG

    Become a stoplight / Change into a traffic light.

    Appearance: Madotsuki transforms into a stoplight.

    Passive Effect: Madotsuki cannot pinch herself awake due to her lack of arms.

    Action: (1) Switches stoplight between green and red.

    Location: Dense Woods B (The Road) - Interact with Shitai-san.

    Practical Uses: When the light is red, all NPCs will freeze in place, which is useful for avoiding Toriningen or catching fast-moving characters. The appearances of some characters also change, for example:

    The Stoplight effect transforming Monoko.


    Tutorial(ゲームのせつめい) See the instructions again / Review the game's tutorial.

    Appearance: None

    Passive Effect: None

    Action: (Equip) A basic tutorial on how to play the game.

    Location: None - Madotsuki starts with this effect.

    Practical Uses: Learning how the game works.

    inline inline

    This is the only effect that can be used in the real world and cannot be dropped as an egg in the Nexus.


    These are actions that work like effects, but are not added to Madotsuki's inventory and are not required to finish the game.



    The chair in Madotsuki's dream room can be ridden when Madotsuki sits on it. Instead of writing in her diary, sitting at the desk and pressing Z (facing the desk) will let Madotsuki scoot the chair around her bedroom. She can ride the chair almost anywhere in the dream world (albeit very slowly), but will not be able to get off it until she returns it to her desk. Some areas are also inaccessible with the chair:

    Effects can be equipped when sitting on the chair for the first time, the sole cause of glitches. Equipping an effect while in the chair then riding it will cause the effect to stack with the chair. This results in the passive effect functioning and any effect action (besides sitting down) working as normal. The aforementioned areas remain inaccessible as Madotsuki is technically still in the chair, with the exception of Docks A, which can be entered from the Sewers if the Midget effect is equipped while in the chair.

    Crick in the Neck

    Looking Left.png
    Look left sit.png

    The only involuntary effect, and the only one to be in the real world. Madotsuki has a random chance of waking up with a crick in her neck. She will constantly be looking left. As she does with no effect, pressing 1 will cause her to sit down. She is unable to write in her diary or play NASU. Going back to sleep and waking up again should solve the problem. Although Madotsuki will not dream that she has a crick in her neck, there is a matching FC World sprite that is unused, suggesting that it could have been an actual effect at some point.


    • The Frog effect is the only effect that can be found in two separate locations: Forest World and Dense Woods B.
      • The Severed Head effect can technically also be obtained in two different areas, albeit they are variants of one world, them being the normal and big variants of Guillotine World.
    • When the English Steam release of Yume Nikki first came out, the translation used different names for the Fat, Flute, Severed Head, and Demon effects as well as the Instructions, respectively dubbing them "Get Fat", "Whistle", "Talking Head", "Devil", and "Game Info". This was changed 12 days after the original release; the update additionally touched up the descriptions for many effects (including those that were not renamed), ranging from minor grammatical fixes to changing the tone of the text.
      • Some of these incorrect names still appear in the FC World menu and when picking up dropped effect eggs in the Nexus. Curiously, the incomplete version of the FC World menu only contains the incorrect names for the Fat effect and the Instructions. Additionally, the FC World menu misspells Midget as "Miget" when all 24 effects have been collected.
    • There are some unused effects that remain in the files of the game, despite never being implemented in any version.
    • In 0.10 and 0.10a, the Witch effect has a bug where, if the player floats with the broom in the Pink Sea, the Number World Bed Room, or the second Neon Tile Path area, the player's footsteps can still be heard while moving around.
      • This is due to the fact that every map contains two copies of the same tileset: one for the regular footstep sound effect and one for the broom. 0.09 included the full code for switching between the two tilesets in every map. This was simplified in 0.10, but the three aforementioned maps were not updated.
      • The maps still contain leftover data for 0.09's method, and attempting to trigger them with cheats instead corrupts the graphics to the tileset indices changing between builds: the second Neon Tile Path area replaces the pyramids with Henkei Shita heads from Footprint Path A (with the full tileset changing to that of Snow World when sitting down), the Number World Bed Room's tiles are replaced with those of Forest World (except when sitting), and the Pink Sea turns completely invisible due to the game attempting to call blank divider tiles, leaving only a black void.
    • In 0.10, the Triangle Kerchief effect's cheek pinch animation always uses the graphic for the invisible state, even if you wake up while visible.
      • The animation for waking up in this state also lacks the sprite transparency that the effect's invisible state typically has.
    • In versions before 0.10, some effects had different 1-key actions:
      • The Knife effect originally had Madotsuki stab the air instead of switching which hand the knife was in. Despite this action sharing its animation with the effect's actual function, it does not affect NPCs as if they have been stabbed.
      • The Triangle Kerchief originally made Madotsuki progressively more transparent when the 1 key was pressed, and less transparent when the 3 key was pressed. Toriningen could also still see and trap Madotsuki if she became fully transparent with the effect.
      • In 0.04, the Umbrella and Blonde Hair effects lacked 1-key actions altogether, though they gained their respective actions in 0.06.