History VideoGame / Portal2

*** One of the Fact Core's "facts" is that [["spoiler:The Moon orbits the Earth every 27.32 days." Irony is, this is one of the ''accurate'' facts. It also says the Space Core will never get to space, which is wrong.]]

** Repulsion Gel will automatically make you jump if you hit it at speed, such as running across it from Propulsion Gel or falling onto it from a height..

* {{Retcon}}: Much of Cave Johnson's backstory is changed from the info that was released on [=ApertureScience.com=] at the time of the original ''Portal''. Instead of dying as a result of mercury poisoning, he now became sick as a result of ingesting Conversion Gel, although that part could be blamed on Johnson being an UnreliableNarrator. In the old story, he proposed the idea for the portal gun while he was on his death bed. However, in ''Portal 2'', all of the test chambers [[spoiler:in the original levels of the facility]] require the use of a portal gun, even the ones that were constructed when Johnson was still young. The location of the Enrichment Center is also changed from UsefulNotes/{{Cleveland}}, Ohio to UsefulNotes/{{Michigan}}'s Upper Peninsula.

** The Enrichment Center is in fact part of a ''much'' larger complex of factories and testing facilities located in a gargantuan cave network built out of what was originally salt mines near and under Cleveland, Ohio, that Johnson acquired in the 1940s. While the scale of the caves in the game are... a bit exaggerated, [[http://www.cbsnews.com/stories/2011/02/07/eveningnews/main7327498.shtml the Cleveland salt mines are a completely real thing]]. Oddly, the game itself {{retcon}}s the mines to be located in Upper Michigan, and there were never any salt mines there. There is exactly ''one'' salt mine in Michigan, located about 1200 feet beneath Detroit. Interestingly, salt-mining in Detroit began before European explorers ever set foot on what is now Michigan soil. Valve's retcon, however, locates the salt mine in Michigan's ''upper'' peninsula, which in real life has iron, copper, and a few gold mines, but no salt mines.

** [[spoiler:Wheatley]] is defeated by [[spoiler:corrupting him with other personality cores, which is exactly what Wheatley did to take over [=GLaDOS=]' body in the first place.]] Also ironic to the player in that [[spoiler:it's the exact opposite of what ''you'' did to defeat [=GLaDOS=] in the first game.]] Even more so when you consider that [[spoiler:according to [=GLaDOS=], Wheatley himself is a core whose primary purpose was to sabotage [=GLaDOS=].]]

*** One of the Fact Core's "facts" is that "[[spoiler:The Moon orbits the Earth every 27.32 days.]]"

** Cave Johnson asks Caroline to "Say goodbye, Caroline," and she humorously responds with "Goodbye, Caroline." At the end of the game, when [=GLaDOS=] (supposedly) [[spoiler:deletes Caroline from her brain]], she repeats the line "Goodbye, Caroline" with a calm but malicious tone.
** "Grab me! Grab me! Grab me!"

--->'''Wheatley:''' Are you alright? Yes or no?\\
'''''Game Hint:''''' ''[Jump] Talk''\\
'''Wheatley:''' Ok, what you did there was jumping...say Apple, aaa-pple.\\

** Despite the framing that she's made of the same pieces that haven't moved from the location where they were destroyed in the first game, the re-assembled [=GLaDOS=] has a more humanoid appearance to her silhouette, more closely resembling a hanging bound body, and she has a sleeker head with a dark "eye socket" rather than a more promineny protruding camera lens on an all-white "face".

** Despite the framing that she's made of the same pieces that haven't moved from the location where they were destroyed in the first game, the re-assembled [=GLaDOS=] has a more humanoid appearance to her silhouette, more closely resembling a hanging bound body, and she has a sleeker head with an eye light in a dark gap rather than a protruding camera lens.