The red dots are the legitimate endings.
Freedom Ending
Obey everything the Narrator tells you to do. At the end, Stanley will destroy the "Mind Control Facility" pushing the "OFF" button, disabling the controls and step out of the building into the green field.
Explosion Ending
Obey everything the Narrator tells you to do except for pressing "On" instead of "Off" on the mind control facilities' power. This will shock the Narrator and, instead of taking control of the facility, will initiate its nuclear self-destruct function, leaving the player to die while the Narrator enjoys their torment and explains everything.
Coward Ending
Close the door to your office at the start of the game. Instead of exploring the office, Stanley chooses to sit there staring at the screen, hoping some commands will pop out.
Mariella / Insane Ending
Listen to the Narrator, but go down the stairs instead of up. Stanley will enter a never-ending paradoxical loop of rooms. As Stanley walks through the rooms without end, he begins to question everything, believing himself to be in a dream. He believes himself to be a bird and to be flying through a star field in space, and even believing the Narrator is just a voice in his head, but realizes that he is not dreaming and ends up screaming for help, dropping dead.
In the end the Narrator tells a story about a woman named Mariella who just discovered a corpse of a crazy man while heading to work.
Museum Ending
Obey everything the Narrator tells you to do, but follow the Escape sign instead of going in the Mind Control Facility. Just before Stanley meets his death at the hands of a large crushing machine, a female Narrator takes over and frees Stanley, giving him a chance to look inside a museum containing beta elements from earlier in the game's production, elements from other endings, and content that was cut from the game.
After that, the female Narrator tells the player that the only way to save Stanley is to quit the game, but staying put will crush Stanley to death leaving the screen blank and truly forcing one to restart.
Confusion Ending
Take the right door, go left in the open door, use the elevator inside the Maintenance Room. Taking this route leaves the Narrator confused as to which direction to go. After opening and closing two doors in Stanley's face, he opens a garage door that leads to the Monitor Room. In successive restarts, Stanley will always end up in the Monitor Room.
After two restarts (ending with multiple doors, then with no doors,) the Narrator decides to use a guide called The Stanley Parable Adventure Line™ Or Line™ for short. However, the Adventure Line™ keeps leading back to the Monitor Room.
On the next restart, the Narrator and Stanley decide to venture away from the Line™, eventually coming to a room with the Confusion Ending Schedule, wherein the Narrator refuses to restart the game as per the schedule. He "breaks" the game, which eventually resets without his consent.
Phone Ending
Take the right door, go into the Warehouse, take the cargo lift across without jumping and answer the phone in the Phone Room. This teleports Stanley in front of what appears to be his apartment, but when he opens the door, expecting his wife, he finds a robotic mannequin. Attempting to leave instead of entering his apartment prompts the Narrator to block Stanley, forcing him to enter his apartment. As the screen tells the player to press a specific button, the apartment around Stanley begins to change into his office while the Narrator tells Stanley the Story of The Death of a Man Named Stanley.
Not Stanley Ending
Take the right door, go into cargo room, take the lift across without jumping, unplug the phone in the Phone Room. The Narrator shows Stanley a hilarious video about Choice. Return to the Two Doors Room.
Taking the right door will prompt further "narrative contradiction," and when you enter the left door, the meeting room will have been destroyed and distorted. The Narrator shuts down the game and goes on a rant about how Stanley destroyed his work. He is cut off by a sudden restarting of the game, with Stanley reappearing in front of the two doors after returning from the cargo room.
Taking the left door will allow the game to proceed as normal (sans the option to go downstairs, with the railing blocking the entrance to do so.) Instead of a keypad to access the Mind Control Facility, you are presented with a voice box in which Stanley must speak the password. He is unable to do so, and the Narrator launches on a tirade about entering the right door and "doing whatever the hell you wanted".
In the end after going through both doors at least once, you (the player, not Stanley) leave Stanley's body and appear above the ceiling in the two doors room (after returning from the Warehouse.) Not having anyone controlling him, Stanley is frozen in place. The Narrator then pleads for Stanley to do something as the credits roll.
Powerful Ending
Take the right door, go into the warehouse, drop to your death.
Games Ending
Disobey the Narrator to the end; take the right door, go into the warehouse, take the lift and jump onto the catwalk. Take the blue door 3 times. Stanley will walk into a large room that the Narrator had not finished building yet; Developer textures (orange and dark-gray tiles) can be seen along the walls around Stanley.
The Narrator will show some prototypes of videogames that he had been working on, due to Stanley's apparent distaste for the Narrator's intended game. They include the original two doors room, this time with a third door to the far right, featuring a wooden door and orange hallway, starkly contrasting with the other two doors.
Stanley will then play a "baby" game, preventing a baby from crawling left into fire. If Stanley fails the game, he is sent to a Minecraft lookalike game. He watches the Narrator create a house, and then walks into a cave in order to mine diamond. As Stanley walks further into the hole, the lighting dims and the Narrator laments on how open-ended the game is.
Stanley is then sent to the first level of Portal. He completes the first puzzle with ease. However, the Narrator closes the elevator and sends it away. Stanley falls through the hole into a remnant of the original office building, but it's actually the office from the original source mod. If Stanley walks back after going to his office, the screen turns to black and the Narrator closes this ending with some thoughtful dialogue.
Stanley can also break the portal puzzle by putting the Weighted Storage Cube through the door, surprising the Narrator. The Narrator will then keep Stanley in the room, since he had ruined his only escape.
Zending
Take the right door, go into the warehouse, take the lift and jump onto the catwalk, take the red door. Stanley will be transported to a Starry Dome where the Narrator and Stanley can find "True Happiness". Stanley eventually goes inside the other room and jumps to his death.
Cold Feet Ending
Same as Powerful Ending, but quickly get off the lift before it takes Stanley and then jump off to the floor below.
Launch Pod Ending
Listen to the Narrator until he reaches the Boss' Office. Quickly enter and leave the boss's office, making sure the doors are closed. All doors behind Stanley will be open; go back towards Stanley's office. A door will be open right in front of his office. Upon entering the door, you will be teleported to a long staircase. After you go far enough there will be a sign warning the player that both the Narrator and the player need to be present in order for escape sequence to play out as intended. The Narrator was disabled earlier on, so Stanley couldn't escape. Like in Not Stanley Ending the Narrator needed Stanley but he wasn't controlled by the player.
Out of The Window Ending
Get on top on the desk on the left with the square chair (434) in the first office and leave through the window. This is possible by walking up to the chair and continuing on top of it. You will then crouch and leave through the window. Stanley will be given a choice. Select either "yes" or "no". If you select "yes", the Narrator will sing a song for Stanley. If you select "no" the Narrator will tell you about the possibilities if you answered "yes".
Heaven Ending
Complete the input on all 5 computers in the office.
The computers can be found at these locations:
- On desk 419 (prior to Two Doors Room)
- On desk 423 (prior to Two Doors Room)
- On the Boss's secretary's desk outside the Boss's office
- On desk 434 (prior to Two Doors Room)
- On Stanley's computer
This will lead Stanley in a place called Heaven full of colored buttons. The player can leave the place by beginning the game again; the last input (on Stanley's computer) will remain on his computer.
Serious Room Ending
Input 'sv_cheats 1' in the console. This will teleport the player to the serious room, where they are sentenced to stay for one hundred billion, trillion, years. If "sv_cheats 1" is input again, the player will be again sent to the room again but this time sentenced stay for "infinity years." If "sv_cheats 1" is input a third time, the narrator will give up and abandon the player to begin searching for a more serious table. Inputting after this "sv_cheats 1" will have no further effect.
Art Ending
Once Stanley reaches the Baby Game, he continues to press the button to save the baby. After 2 hours, the Narrator will add another game, one where you have to save a puppy from piranhas by pressing another button in front of the first one. In order to beat both games, Stanley has to go back and forth to press both buttons. After a total of four hours playing, Stanley will be brought to a white room where he will see the Divine Art.
In addition, when playing the Baby Game, the Narrator will talk about the likeliness of using hacks to repeatedly press the button without actually doing anything yourself.
Whiteboard Ending
Sometimes when the game starts/restarts the office is all blue-ish. When this occurs, Stanley can open room 426. Once opened, Stanley finds a small room in which a whiteboard hangs on the wall, saying "Welcome to the Whiteboard Ending". This is more like an easter egg or a joke given by the game's developers.