Portal Easter Egg - Black Mesa Competition

When in the underbelly, after walking across the long bridge, you come to an office-type hallway. You are given the option to go left or right. Going left takes you to the hallway to GladOS but if you turn right, down the shorter hall, you come to an un-openable door with a window in the adjoining wall. If you put your back to the door and look into the window, after a moment of adjustment you can see a short presentation detailing financial competition between Aperture science and Black Mes.
The joke being that Valve created Portal using the same revolutionary shooter technology developed for HalfLife.

User Rating:
  5.0/10 with 1 votes
Contributed By: Ichigoli on 02-08-2010
Reviewed By: MonicaIngram
Special Requirements: Portal, in the underbelly after Tc 19,
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Ash Rimmer writes:
or it is because the two games are tied in with one another (i.e they take place set in the same universe) so arpeture science is a rival company to halflife's black mesa
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gabe123 writes:
Portal is a spin-off series of the Half Life series.
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Jedi Sean writes:
I like Aperture better then Black Mesa, Cave Johnson (Portal 2) reveals that Black Mesa steals Apertures ideas!
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