| Spoiler warning: Plot or ending details follow. |
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Overview
This is the walkthrough page for nostAlgic. If you see any incorrect/missing information please inform us, or add the missing information.
A note for the effects walkthrough including the bus: The bus has a variable of getting either a light blue, a dark blue, or a pink background. If the background is light blue, exit the bus and you will be in the same location. Re-enter. If the background is dark blue, exit to find the bed world If the background is pink, exit to find the shooting star world. If you do not get to the place you wanted or needed to go, you must either use the Carnation effect and make your way back to the bus, or wake up and go back to the bus to try again.
Locations to get Effects
Comet
Appearance- A rides a bright comet.
Location- Interact with a brightly colored NPC south of forest world.
Camera
Appearance- A wears a camera around his neck.
Location- Go to the Forest World. Head north and enter the triangle glass doors. Go right and interact with the light blue archway. Go down until you are stopped by some pink seaweed. Go left and you will the effect between some blue pillars.
Tree
Appearance- A's head becomes a tree.
Location- Enter the Sugar Sea World. Go south from the door until you're stopped by a large slice of lemon. Go right until a another slice of lemon appears from the screen below you. Go up and there will be a slice of lemon placed upwards at an odd angle. Go right from that and you should reach the Bus Stop. Sit on the bench.
Walk past the windmill panorama. In the Bus Area, go north and enter the blue bus. In order for you to reach the Bed World, the background must be a dark blue. Leave the bus and go right until you see two large green plants. Go between them and you will be teleported to the mirror room. Walk down the hallway and interact with the semi-transparent sprite of A.
Carnation
Appearance- A's head becomes a carnation flower.
Location- Get to the forest world, head north and enter the glass triangle doors. Go right and interact with the light blue gate to reach Undersea World. Go down until you're stopped by some pink seaweed. Go left to reach some green-blue towers. Enter the one that has a doorway in it. Go up past the sunflower panaroma.
Go down and left, interact with the joker with the lizard tail. In the screen world, go down and bear right until you reach an exit. Go up from the exit and left a bit. Interact with the book with holes in it. Turn back and you will be in a new area with several chasers. Go south-east to an area with green grass and a carnation circled by butterflies. Interact with the carnation.
Ribbon
Appearance- A wears their hair in a ponytail with a mint green ribbon.
Location- Go to the sugar sea world and head northeast to the bench. When you get to the bus area, head north to the bus and board it. The background must be pink to get to the shooting star world. Find the large clock tower and get in it, walking up the ladder. Interact with the girl wandering with a stand up mic to get to the candy world. Keep track of where you are and interact with/eat all the candy to gain the effect.
Fork
Appearance- A's head becomes a fork.
Location- Enter the Forest World. Go directly left from the door and enter the house. Enter the door on the far right. Interact with the handle on the floor. Go straight down until you reach a large table and chairs. Go down a little bit and right from those. You should see large blue cat ears at the bottom of your screen.
Go down to them and interact with the cat globe.Go left past the cat panorama which will take you to the Nursery Room. Go down until you see a fork among some plates of food to your left. Interact with the fork.
Zero Gravity
Appearance- A floats in the air
Location- Go to the sugar sea world and head northeast to the bench. When you get to the bus area, head north to the bus and board it. The background must be pink to get to the shooting star world. Wander up to the star suspended on marionette strings and interact to get the effect.
Or
Enter the Pathway World. Go down from the door until you reach a second light blue tree that has a branch that stretches out above you and over the path. Go left from that branch, going through a green tree and interact with the present. Interact with the lamp inside so the sky turns blue and then leave.
This will take you to the Shooting Star World. Go left and then up a narrow bridge. You should see a star suspended by marionette strings. Interacting with it will give you the effect.
Fruit Knife
Appearance- A holds a small fruit knife.
Location- In the sugar world, interact with the fat bleeding candy cane to transform the world, and find the red flat peppermint on the ground.
Frying Pan 
Appearance- A holds a blue frying pan.
Location- Get to the forest world and head northeast just up from the comet that gives you the comet effect to find the blue house. Head inside and enter the far door, then interact with the large blue handle of sorts. Head northeast to the pink and blue door and walk through the cat panorama, getting into the nursery room. Find the egg and interact to get transported to the egg world. Head right until you see a broken egg with an object inside, and interact to gain the effect.
Receiver
Appearance- A's head is replaced by a radio receiver.
Location- Enter the Electronics World. Go straight up from the door and interact with the gold radio tower.
Unicorn
Appearance- A's Colour scheme becomes pastely. A gains ears and a tail, as well as a unicorn's horn.
Location-
Clock Hand
Appearance- A's body is covered with clock hands.
Location-
Pillow and Nightcap
Appearance- A wears a pink nightcap and holds onto a pink pillow
Location-
Worlds (in version 0.07)
From the dream world nexus, there are four accesible doors, Pathway World, Electronics World, Sugar Sea World and Forest World.
Electronics World
A moon-like sort of world that loops horizontally, but not vertically. It has many buildings with circuitry covering the sides. There is a gold radio tower at the top of this world which will give you the Receiver effect.
Interacting with the NPCs in this area will cause your screen to change colour.
Pathway World
A world filled with huge trees and has a checkerboard pathway going north/south and east/west.
There is a large present box south-west from the entrance. Interacting with the lamp inside it will bring you to the Shooting Star World.
Direct Connections:
- Shooting Star World
Sugar Sea World
A pink sea studded with what appear to be candy-canes in bent shapes (or straws) and lemon slices. If you sit at the bench in the small bus stop in this world, you will be transported to the Windmill Panorama and then the Bus Area. There is a paper airplane floating around that transports you to a world full of scraps of large paper airplanes and pillars with paper airplanes stuck all over them.
Interacting with the fat, bleeding candy cane transforms the world into a slightly creepier version where the sea is dry and there appears to be red and blue pills littered everywhere. Some are broken, leaking green liquid. There is a set of brightly coloured syringes, crossed like swords.
Direct connections:
- Paper airplane world
- Distorted Sugar Sea World
- Windmill Panorama/Bus Area
Forest World
An area with snowy white paths and pink and blue pine trees. The only NPC here is a yellow comet from which you receive the Comet effect. Directly north are glass triangle doors, and there is also a blue house.
Direct connections:
- Triangle Path
- Blue House
The door to A's bedroom is unlocked at the end of the game, leading to a new area. See the Plot area for details. [includes spoilers.]
Ending in version 0.05
This is the ending for version 0.05 of nostAlgic, which includes Allen.
Once all eight effects have been found, the player is given access to the previously locked white door at the end of the hall. Opening it leads A to an empty white area studded with trees, flowers, and some of the scenery from the Sugar World. Heading north for a while causes the screen to fade to white and enter a new scene.
A boy with brown hair is sitting in a bed next to a TV. A woman, presumably the boy's mother, enters the room and looks at him. The scene changes again.
You are now playing the boy. If you access the menu, you will see that despite the fact your character image is the same (the letter A), your name is now Allan. The woman from before is at a kitchen table, either dead, wounded, or asleep next to a pile of what appear to be fruit shavings or pills with a paring knife (perhaps the same kind from the Fruit Knife effect). The kitchen she is in is barred off, so the player is left either to explore the limited TV room or enter Allan's bedroom. Once entered, you cannot exit. The only interactable items in the room are a picture of a flower and an empty notepad next to some markers. Interacting with the notepad leads to the next scene.
The mother wakes from the table, but the house is now unsettling colors and infested with white worm-like creatures everywhere. Contrary to when you played Allan, the menu cannot be accessed at this time. The only option is to enter Allan's room, which has also become distorted. You'll find the boy where you left him off -- except he is now a Medusa-like monster with a brown tangled head covered in red eyes. The mother carries the paring knife from earlier, and interacting with the monster from the front will make her kill it. You hear Allan-monster's scream and the screen fades.