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114

I think it's definitely worthwhile playing Portal first. I just started Portal 2 and would probably have been a bit lost without having played Portal first. There is almost no introduction to how the portal-gun and other stuff works in Portal 2 and there are a lot of references to the previous game. It makes Portal 2 an even better game if you have played ...


45

Aperture Science (which is the firm that developed the Portal gun) is in direct competition with Black Mesa (which is the firm for which Gordon Freeman worked) for military contracts See the section Other facts on this link Aperture Science and Black Mesa were bitter rivals. As seen in the Portal maps "testchmb_a_15" and "escape_02", Aperture Science ...


38

Portal 2 starts out fairly simply so, from a gameplay standpoint, you won't have a hard time figuring out the mechanics of the game. However, Portal 2 continues the storyline from the first game. There are also many elements in the game that you wouldn't understand/enjoy/love not having played the first game. Playing Portal 2 without playing Portal can be ...


38

Assuming the announcer was reciting the number of days you had been in stasis, as with your earlier 50-day wake up call, "it has been 9 9 9 9 9..9 9...[static]", it has been at least 273 years, or 27,300 assuming the pause wasn't a broken-record effect. In "The Final Hours of Portal 2" e-book, Keighley mentions that: One way to further differentiate ...


36

She is Chell. See here: Although Chell's origins are unknown, she was most definitely among the people present during GLaDOS's activation in 200-, as GLaDOS locked down the facility after her activation, letting none escape, or be let in from the outside. EDIT: Visiting aperturescience.com, you can learn that she is the daughter of Cave Johnson (CEO ...


33

No, angle of penetration matters in both games. The only online article we could find covering this suggests that the angle matters in Portal 2, but did not in Portal 1, but after doing science, we can clearly demonstrate that the article's wrong - entry angle matters in both games. Since you asked for undeniable proof, the following videos show you this ...


31

You do have 100 health, only the exact number isn't shown on the HUD. Continuous damage will kill you, but your health fully regenerates very quickly when you aren't damaged for a bit. You can observe this in Portal 1 by giving yourself the HEV suit (console command give item_suit, needs sv_cheats to be enabled), which causes your health to be visible. ...


30

GLaDOS is short for: Genetic Lifeform and Disk Operating System Source


22

Preface This could be considered too localized. At this point, there's no official 'canon' answer. Short Answer As of Portal 2, speculation tends to lean in the direction of Cave being Chell's father. Long Answer From the Combine OverWiki article on Chell: Players exploring the Aperture facility in Portal 2 can discover a presentation from the Bring ...


16

No, I doubt it. Regarding the first two, in the training chamber you go through, Glados states that the normal Chamber 16 is down for maintenance, so Chell instead is put through a training course for military androids (which is why there are so many turrets in there.) Those lines are simply her trying to manipulate the androids that normally navigate said ...


15

No exact number has been stated that I'm aware of. All we know is that "hundreds of years" have passed between the end of Portal 1 and the beginning of Portal 2.


15

In the original Portal, just before the chamber containing GlaDOS, there is a projector with some slides detailing that Black Mesa and Aperture Sciences are in direct competition. In the song at the end of Portal, GlaDOS mentions Black Mesa: "Maybe you'll find someone else to help you. Maybe Black Mesa... that was a joke, ha-ha, fat chance" In HL2:Ep2, ...


14

While it's true that the Aperture Science Quantum Tunneling Device prototype and its subsequent models are capable of opening a portal from one place to another, the size of objects transported through such portals are severely limited. Furthermore, while it's believed that the "modern" version of the ASHPD (Aperture Science Handheld Portal Device) has a ...


13

There is no proof that GLaDOS had other living test subjects during Portal's timeframe. In fact, the comic that bridges the two games (Lab Rat) seems to specifically indicate that there weren't any humans alive in the facility except Chell and Doug Rattmann (Rattmann is not/never was a test subject).


13

Chell is probably not an android. The first two mentions of androids ("Well done android" and the reference to Android Hell) are probably not there because she is an android, and more likely because that test chamber is the "live fire course for military androids" and GlaDOS is saying the lines she would say to actual androids that were made to run the ...


12

Certainly a lot of the story elements will make more sense if you have played the first game, however I don't think it's absolutely necessary. As for gameplay instructions and explaining how things work, yeah, you'd be much better off playing the first one first. Portal 2 drops you much more suddenly into the thick of things than Portal 1 did. Those ...


12

Its not one of their motto's, it was just a marketing line of the products they were selling in 1940, their motto's are: Courage is Not the Absence of Fear There's a hole in the sky through which things can fly We do what we must because we can The best damn applied sciences company on Earth (informal) A clear picture of the future A clear focus on the ...


11

First off, it's not the company motto, it's an ad campaign. Aperture Science was a shower curtain company producing deadly shower Curtains before they became better known for developing the portal gun. Basically, you're reading the phrase the wrong way. It's not "Salt Asbestos Curtain", it's "Salt", "Asbestos", and "Curtains". I'm not sure quite where the ...


11

This page has a timeline of the rivalry between Black Mesa and Aperture Science In HL2 Ep 2, You are told about an aperture ship called Borealis, it is suggested that this ship will appear in episode 3. So both games take place in the same universe, and Valve seem to be intertwining the two stories. There has also been rumour of a portal gun appearing in ...


10

"Clean out the skeletons" is likely not referring to actual test subjects in this case, but rather the English idiom of "having skeletons in one's closet". The implication is that he is discovering all these things he didn't know about (or was otherwise repressing his knowledge of) for the first time. However, it is Portal, so the possibility exists that ...


9

These white walls are actually painted with a substance called "Conversion Gel" which allows portals to be opened in them. Several areas in the Condemned Testing Facility seem to indicate that the Conversion Gel is used to paint all further testing facilities, explaining how only white, painted walls were affected by the Portal Gun. Conversion Gel is ...


8

The Combine Overwiki has full articles on Aperture Science and Black Mesa. These articles cover all that is canonically known about these organizations. A quick summary: Aperture Science Location: Upper Michigan Purpose: Originally created as a shower curtain manufacturer by a successful shower curtain salesman, the company eventually evolved "into an ...


7

Gameplay: Portal 2 can stand on its own. The first levels of Portal are also in Portal 2, letting people in on the basics. The later levels explore techniques and mechanics that are not present in Portal 2. Thus, playing Portal and especially mods like Portal: Prelude can give you false expectations for Portal 2. Plot: this is not really true. Wheatley ...


7

Valve had a "GLaDOS Terminal" set up at www.aperturescience.com for a long time. With the right logon and commands you could see a compressed history of Aperture Science. It appears to be gone now (replaced by a Christmas video) but you can still access it here. Type login, Use the username cjohnson and the password tier3 to log in, then issue the notes ...


5

As already suggested and accepted play the original Portal before starting the sequel is preparatory to have even a greater experience with Portal 2. But suppose that you are so excited because of all wonderful reviews and nice comments you read around, and you really want to start immediately Portal 2, while the game is installing you can spend 15 minutes ...


4

You should definitely play the first game. Not only because it's important to understand the story, but also because its just as excellent a game as Portal 2 is.


4

Despite widespread speculation at the time, there was no concrete information given during the ARGs that formally established a relationship between Chell and Cave Johnson. For speculation post-Portal 2, see Shaun's answer.


4

Type enable_debug_overlays 1 in the console to enable the trajectory lines.


3

In the original Portal there was a clipboard with a humanoid figure on it (probably representing Chell) and another clipboard with a chicken-like figure on it. It is not clear if this represents a normal chicken or some sort of mutant chicken. However the clipboard implies that this chicken is yet another test subject, albeit not a human test subject. The ...


3

You can play Portal 2 without having played Portal first as every game mechanic is presented in Portal 2. However, you'll spoil the story of the first one doing that as it is a direct sequel (and there are many references to the first one, in the story and in some puzzle). I think it would be a good idea to play the first one, because once you have finished ...



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