There are 24 effects that the player can find, each of which affects Madotsuki's appearance and often abilities. Very few players achieve the goal of gathering all effects alone, and walkthroughs exist mainly to help find each one.
Effects
Frog
Optional Effect: Madotsuki hops when "1" is pressed
Involuntary Effect: Madotsuki's head becomes that of a frog and she now moves faster in water
Where Found: Forest
Other Uses: None known
Umbrella
Optional Effect: Madotsuki turns the umbrella when "1" is pressed
Involuntary Effect: Madotsuki carries and umbrella. The weather turns rainy, contnuing even when the umbrella is put away (effect must be deliberately removed for this to happen).
Where Found: Puddle World
Other Uses: Puts out a fire that blocks an area
Hat and Scarf
The hat and scarf is exactly as it sounds. However, pressing '1' while it is snowing turns Madotsuki into a snowman and back.
Optional Effect: Madotsuki turns into a snowman when "1" is pressed
Involuntary Effect: Madotsuki wears a hat and scarf
Where Found: Block World
Other Uses: Interacting with the hat-and-scarf girl while wearing a hat and scarf as a snowman will always teleport you back to the her on the return trip.
Yuki-onna
Optional Effect:
Involuntary Effect: Madotsuki turns into a Yuki-onna. It starts to snow, contnuing even when is put away (effect must be deliberately removed for this to happen).
Where Found: Winter World
Other Uses: Puts out a fire that blocks an area.
Knife
Optional Effect: Madotsuki stabs when "Z" is pressed, and switches the hand she is holding the knife in with "1"
Involuntary Effect: Madotsuki carries a knife, causing many characters to run away from her.
Where Found: Dark World
Other Uses: Many characters react in strange ways when stabbed or threatened with the knife.
Medamaude
Optional Effect: Madotsuki is warped back to the Nexus upon pressing "1"
Involuntary Effect: Madotsuki's head turns into a hand.
Where Found: Eyeball World-- Below the mass of eyes, near a hopping leg, is a hand with an eye in it's palm. This will give you the effect.
Other Uses: None known
Fat
Optional Effect: Madotsuki's fat makes a sound when "1" is pressed
Involuntary Effect: Madotsuki turns fat.
Where Found: The Docks-- From the stairs that lead to Hell, go all the way to the right, go up, then chose the second path and follow it until you find the Red man. He gives you the fat effect. For older versions-- The mirror in Hell gives you the fat effect.
Other Uses: None
Midget
Optional Effect: Pressing "1" causes Madotsuki's number of midgets to increase by 1, and "3" will cause the number of midgets to decrease by 1
Involuntary Effect: Madotsuki turns into a midget.
Where Found: Candles World-- Around the middle of the world there will be a Dwarf sprinting. Catch him and he will give you the effect.
Other Uses: Entering the hole on Mars
Flute
Optional Effect: Madotsuki plays a tune with a random pitch when "1" is pressed (doing this rapidly makes a melodious song).
Involuntary Effect: Madotsuki holds a flute to her lips
Where Found: The mall, in the room with the purple 'E-man' playing a tune.
Other Uses: None known
Neon
Optional Effect: Pressing "1" causes the screen to change colour. This is turned off when Neon is unequipped.
Involuntary Effect: Madotsuki flashes colors. It also looks like you can see her skeleton.
Where Found: Neon World -- From the Door, go down three rooms and over to the right three rooms. Touch the parrot, and it will give you the Neon effect.
Other Uses: None known
Nopperabou
Optional Effect: Pressing '1' causes her head to temporarily remove itself from her shoulders and rotate 360 degrees.
Involuntary Effect: Madotsuki loses her facial features with this effect.
Where Found: From the Mural World-- go up until you see two blue blocks, make a left, go until you see two murals (one blue and one red with a space in between) and go in between and up, when you see the manhole, go down in it. From there, keep going left until you get to a space with a floating faceless ghost. Touching him will give you the Nopperabou effect.
Other Uses: None known
Severed Head
Optional Effect:
Involuntary Effect: Madotsuki turns into a severed head, reducing her speed and height.
Where Found: The Guillotine room in the Numbers World. Run around and try to find the Guillotine while avoiding the Toriningen. It will give you the Severed Head effect.
Other Uses: In the second part of the Numbers World with the normal Toriningen and the beds, opening a closet MIGHT take you to a part of the Tile World with the Lunatic Toriningen (stab the normal Toriningen if it doesn't work). Madotsuki in her normal form blocks the closet even when it's open. Equip the Severed Head and see what happens.
Towel
Optional Effect: Pressing "1" causes Madotsuki to sneeze
Involuntary Effect: Madotsuki has a towel wrapped around her
Where Found: Go to the Dark World, go to Wilderness A, make your way through as if you were going to the Sky Garden, but when you get to the larger area go to Onsen-san's house and go to the left. There will be a Towel flapping around in the wind, and you will recieve the Towel Effect upon touching him.
Other Uses: None known
Cat
Optional Effect: Madotsuki meows when "1" is pressed, causing NPCs to come near her.
Involuntary Effect: Madotsuki has cat ears and a tail
Where Found: In the Shield-Folk World near the mass of Shield-Folk. The Floating cat will give you the effect.
Other Uses: Causes NPCs to come near her - may be useful in some situations
Lamp
Optional Effect: Pressing "1" make Madotsuki light up, and go dark again.
Involuntary Effect: Madotsuki's head becomes a lamp
Where Found: In the Lamp World in the Numbers World. If you can get to the small building in it, go around so that you see the eye, then head up. The midget lamp gives you this effect.
Other Uses: Many areas in darkness can be lit up with the lamp effect, e.g. Dark World
Bicycle
Optional Effect: Madotsuki sounds a bell when "1" is pressed.
Involuntary Effect: Madotsuki rides a bicycle and her speed is dramatically increased
Where Found: From the Graffiti World, just keep walking to the right. There will be a box pattern around a bike, and touching it gives you the Bicycle effect.
Other Uses: Apart from those who use the Speed Glitch, the Bicycle is a staple effect in the arsenal of any player.
Long Hair
Optional Effect: Madotsuki sits down when "1" is pressed (which is what happens when no effect is equipped)
Involuntary Effect: Madotsuki's hair becomes longer
Where Found: From the Mural World, go over to the collection of long murals, then go down. The mouth monster with the brown long hair gives you the Long Hair effect.
Other Uses: None known
Poop Hair
Optional Effect: Pressing "1" drops a fly
Involuntary Effect: Madotsuki's hair is now poop
Where Found:
Other Uses: Flies can be used as markers to prevent getting lost - they persist through effect changes
Blonde Hair
Optional Effect: Madotsuki sits down when "1" is pressed (which is what happens when no effect is equipped)
Involuntary Effect: Madotsuki's hair becomes blonde
Where Found: From the Mural World, go up until you see the two blue blocks. Go right until you see a mouth monster with Blonde Hair. This will give you the Blonde Hair effect.
Other Uses: None known
Triangle Kerchief
Optional Effect: Madotsuki becomes transparent when "1" is pressed.
Involuntary Effect: Madotsuki wears a triange kerchief as a tiara, symbolising death.
Where Found:
Other Uses: Useful for getting past Toriningen in several areas. Toriningen are no longer aware of her, but will transport her if intentionally interacted with. (You can also bump Uboa.)
Witch
Optional Effect: Madotsuki can fly in the air.
Involuntary Effect: Madotsuki's dresses as a witch, and gets on a non-functional broom.
Where Found:
Other Uses: In the mall, Madotsuki is able to fly from the top of the store.
Demon
Optional Effect: Madotsuki casts a lightning strike when "1" is pressed.
Involuntary Effect: Madotsuki turns into a demon
Where Found:
Other Uses: None known
Buyo Buyo
Optional Effect: Madotsuki "jiggles" when "1" is pressed
Involuntary Effect: Madotsuki turns fat.
Where Found:
Other Uses: None known
Stoplight
Optional Effect: Madotsuki's light changes from red to green or green to red when "1" is pressed. Other characters are stopped by this effect when her red light is on.
Involuntary Effect: Madotsuki turns into a stoplight.
Where Found: Forest
Other Uses: Monoko when stopped changes appearance and a full-screen event can be seen by interacting with her. The Nexus
Instructions
Optional Effect: Instructions appear on screen when the effect is selected
Involuntary Effect: None
Where Found:Madotsuki starts with this effect
Other Uses: To understand the game, these can be read
Pseudo-effects
Chair
The chair in Madotsuki's dream room can be ridden when Madotsuki sit on it then pulls the chair away
Optional Effect: Madotsuki gets off the chair when "Z" is pressed
Involuntary Effect: Madotsuki hops to places now while sitting on her chair
Where Found:Madotsuki's dream room
Other Uses: Speed Glitch (see below)
Speed Glitch
Sitting in the chair (above), then equipping an Effect will cause the player to double their speed upon getting up. Although Madotsuki will appear as her normal sprite (until going to an 8-bit map), her effect will be active. The bicycle is the most commonly used effect for this, which more than quadruples her speed. The Speed Glitch is an oversight caused by allowing the player to use the menu in the chair.
Optional Effect: Madotsuki will sit if 1 is pressed, but the other effect will try to happen as well. (e.g. with the bike, the bell will also ring.) If you switch effects in the menu, speed boost wears off.
Involuntary Effect: Madotsuki's speed increases dramatically + any other involuntary effects associated with used Effect aside from appearance-related effects (after getting off the chair).
Where Found: Madotsuki's dream room
Other Uses: None