History YMMV / Portal1

* MagnificentBitch: [[AIIsACrapshoot GLaDOS]] is computer created by [[MadScientist Cave Johnson]] to run Aperture Science after his death. Once activated, [=GLaDOS=] proceeded to kill most of the scientists with neurotoxin and took over the Enrichment Center to conduct tests at her own leisure. [[VideoGame/Portal1 In the present]], [=GLaDOS=] put Chell through a series of potential lethal tests before trying to murder her. Defeated and shut down by Chell in retaliation, [=GLaDOS=] is [[spoiler:[[VideoGame/Portal2 accidentally awoken years later]] by Wheatley. Throwing Chell back into more tests, she is eventually overthrown by Wheatley thanks to Chell's actions. With Wheatley threatening to destroy the facility with his own stupidity, [=GLaDOS=] convinces Chell to help her take Aperture back from Wheatley, and in turn lets Chell go when that is done. Switching focus toward Cooperative Testing, [=GLaDOS=] uses the robots Atlas and P-body to secure control over the lower parts of the facility and eventually give her access to more human test subjects. When a mysterious hacker (actually a mother bird on a keyboard) forces her hand, resulting in the deaths of her human test subjects, [=GLaDOS=] sends the robots after it before adopting the baby birds to raise as killers.]]

* SpiritualSuccessor: To ''[[https://www.digipen.edu/fileadmin/website_data/gallery/game_websites/NarbacularDrop/ Narbacular Drop]]''. The team behind it were hired by Valve to develop this game.

* MagnificentBitch: [[AIIsACrapshoot GLaDOS]] is computer created by [[MadScientist Cave Johnson]] to run Aperture Science after his death. Once activated, [=GLaDOS=] proceeded to kill most of the scientists with neurotoxin and took over the Enrichment Center to conduct tests at her own leisure. [[VideoGame/Portal1 In the present]], [=GLaDOS=] put Chell through a series of potential lethal tests before trying to murder her. Defeated and shutdown by Chell in retaliation, [=GLaDOS=] is [[spoiler:[[VideoGame/Portal2 accidentally awoken years later]] by Wheatley. Throwing Chell back into more tests, she is eventually overthrown by Wheatley thanks to Chell's actions. With Wheatley threatening to destroy the facility with his own stupidity, [=GLaDOS=] convinces Chell to help her take Aperture back from Wheatley, and in turn lets Chell go when that is done. Switching focus toward Cooperative Testing, [=GLaDOS=] uses the robots Atlas and P-body to secure control over the lower parts of the facility and eventually give her access to more human test subjects. When a mysterious hacker (actually a mother bird on a keyboard) forces her hand, resulting in the deaths of her human test subjects, [=GLaDOS=] sends the robots after it before adopting the baby birds to raise as killers.]]

* MagnificentBitch: [[AIIsACrapshoot GLaDOS]] is computer created by [[MadScientist Cave Johnson]] to run Aperture Science after his death. Once activated, [=GLaDOS=] proceeded to kill most of the scientists with neurotoxin and took over the Enrichment Center to conduct tests at her own leisure. [[VideoGame/Portal1 In the present]], [=GLaDOS=] put Chell through a series of potential lethal tests before trying to murder her. Defeated and shutdown by Chell in retaliation, [=GLaDOS=] is [[spoiler:[[VideoGame/Portal2 accidentally awoken years later]] by Wheatley.]]

* CommonKnowledge: Due to "TheCakeIsALie" becoming an abundant [[MemeticMutation meme]] to the point of being long [[DiscreditedMeme discredited]], a lot of people who haven't played ''VideoGame/Portal1'' take the phrase at face value and believe there is no cake in the game. As a result, first-time players might be surprised when the end credits roll and it's shown that there actually ''is'' a cake in the game, supposedly baked by order of [=GLaDOS=]; the lie is that she had no intention of giving it to the PlayerCharacter.

* CommonKnowledge: Due to "TheCakeIsALie" becoming an abundant [[MemeticMutation meme]] to the point of being long [[DiscreditedMeme discredited]], a lot of people who haven't played ''Portal'' take the phrase at face value and believe there is no cake in the game. As a result, first-time players might be surprised when the end credits roll and it's shown that there actually ''is'' a cake in the game, supposedly baked by order of [=GLaDOS=]; the lie is that she had no intention of giving it to the PlayerCharacter.

* MagnificentBitch: [[AIIsACrapshoot GLaDOS]] is computer created by [[MadScientist Cave Johnson]] to run Aperture Science after his death. Once activated, [=GLaDOS=] proceeded to kill most of the scientists with neurotoxin and took over the Enrichment Center to conduct tests at her own leisure. [[VideoGame/Portal1 In the present]], [=GLaDOS=] put Chell through a series of potential lethal tests before trying to murder her. Defeated and shutdown by Chell in retaliation, [=GLaDOS=] is [[spoiler:[[VideoGame/Portal2 accidentally awoken years later]] by Wheatley. ]]

* MagnificentBitch: [[AIIsACrapshoot GLaDOS]] is computer created by [[MadScientist Cave Johnson]] to run Aperture Science after his death. Once activated, [=GLaDOS=] proceeded to kill most of the scientists with neurotoxin and took over the Enrichment Center to conduct tests at her own leisure. [[VideoGame/Portal1 In the present]], [=GLaDOS=] put Chell through a series of potential lethal tests before trying to murder her. Defeated and shutdown by Chell in retaliation, [=GLaDOS=] is [[VideoGame/Portal2 accidentally awoken years later]] by Wheatley. Throwing Chell back into more tests, she is eventually overthrown by Wheatley thanks to Chell's actions. With Wheatley threatening to destroy the facility with his own stupidity, [=GLaDOS=] convinces Chell to help her take Aperture back from Wheatley, and in turn lets Chell go when that is done. Switching focus toward Cooperative Testing, [=GLaDOS=] uses the robots Atlas and P-body to secure control over the lower parts of the facility and eventually give her access to more human test subjects. When a mysterious hacker (actually a mother bird on a keyboard) forces her hand, resulting in the deaths of her human test subjects, [=GLaDOS=] sends the robots after it before adopting the baby birds to raise as killers.

* ItWasHisSled: The biggest plot-related spoiler is really [[spoiler:that there's a plot at all, since at first glance the game appears to be just a fairly straightforward puzzle game.]] But with a sequel game (that has an advertised plot) and [[spoiler:[=GLaDOS=]]] becoming a well-known character outside of the game, it's more likely that you'll be going into it knowing the main plot twist.

* DVDCommentary: The game has an alternate play mode in which speech-bubble-shaped objects appear that are triggers for audio clips of commentary. Most of the clips are the designers talking about the process of making the game.

* ItWasHisSled: The biggest plot-related spoiler is really [[spoiler:that there's a plot at all, since at first glance the game appears to be just a fairly straightforward puzzle game.]] But with a sequel game (that has an advertised plot) and [[spoiler:GLaDOS]] becoming a well-known character outside of the game, it's more likely that you'll be going into it knowing the main plot twist.

* ItWasHisSled: The biggest plot-related spoiler is really [spoiler]that there's a plot at all, since at first glance the game appears to be just a fairly straightforward puzzle game.[/spoiler] But with a sequel game (that has an advertised plot) and [spoiler]GLaDOS[/spoiler] becoming a well-known character outside of the game, it's more likely that you'll be going into it knowing the main plot twist.

* ItWasHisSled: The biggest plot-related spoiler is really that there's a plot at all, since at first glance the game appears to be just a fairly straightforward puzzle game. But GLaDOS being an active and malicious entity in Chell's testing instead of just a malfunctioning recording is well-known at this point, thanks to both PopCulturalOsmosis and the [[LateArrivalSpoiler Late-Arrival Spoilers]] of Portal 2 and Lego Dimensions.

* ItWasHisSled: The biggest plot-related spoiler is really that there's a plot at all, since at first glance the game appears to be just a fairly straightforward puzzle game. But GLaDOS being an active and malicious entity in Chell's testing instead of just a malfunctioning recording is well-known at this point, thanks to both CultralOsmosis and the [[LateArrivalSpoiler Late-Arrival Spoilers]] of Portal 2 and Lego Dimensions.