Portal: Prelude, as its name states it, is an unofficial prequel to the game Portal. Its story revolves around the pre-GlaDOS epoch, even before she was plugged in. At this time, test subjects were monitored by real Aperture Science employees, whose work was tedious, lengthy and repetitive. This is why they decided to build a great artificial intelligence that could both replace them in these difficult tasks, and also take responsibility for many other tasks within the complex and compete with Black Mesa's superiority. All employees of the Aperture Science complex are now eagerly awaiting GlaDOS. Maybe even a little too eagerly, as the upcoming events will tell... This game is totally free. It offers a bit more gameplay hours than the original Portal, with 8 chapters, 19 test chambers, 48 challenges, 6 advanced maps, a brand new storyline and more than 400 lines of english speech with dozens of subtitles translations.

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Portal Prelude
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Frehelias
Frehelias

I see something.
But eh why is it upside down?

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DeadPhaker
DeadPhaker

IZ GMAAAAN!

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DoctorShark666
DoctorShark666

because he's thinking with portals duh

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Wheatley!
Wheatley!

its g-man from halflife2 portal uses the half-life engine but portal 2 dosent, portal 2 is its own game you can only do impulse 101 in portal because its the half-life engine. you cant in portal 2 because it is its own game

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Killeronthelose3
Killeronthelose3

why is gman in the game i thought he was only in half-life 2

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The_Mastodon
The_Mastodon

Isn't it obvious that Portal is the same universe as Half-Life?

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narvikboy
narvikboy

he was the owner of Black Mesa in half life 2 and apeture siencs trying to be better then Black mesa so maybe he is there to make the (big robot you destroy in portal evil:P

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Wheatley!
Wheatley!

you mean glados? he isnt making glados, gman is there to eat you

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Alphys-The-Medic
Alphys-The-Medic

no no no no no no gamn all dead...................THAT YOU! AHHHHHHHHHHHHHHHHHHHHHHHH* X_X

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king_jessum
king_jessum

g-man väärinpäin???!!

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support1358549406
support1358549406

It's called reusing NPCs.

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