Farm-Fresh balance.pngYMMVTransmit blue.pngRadarWikEd fancyquotes.pngQuotes • (Emoticon happy.pngFunnyHeart.pngHeartwarmingSilk award star gold 3.pngAwesome) • Refridgerator.pngFridgeGroup.pngCharactersScript edit.pngFanfic RecsSkull0.pngNightmare FuelRsz 1rsz 2rsz 1shout-out icon.pngShout OutMagnifier.pngPlotGota icono.pngTear JerkerBug-silk.pngHeadscratchersHelp.pngTriviaWMGFilmRoll-small.pngRecapRainbow.pngHo YayPhoto link.pngImage LinksNyan-Cat-Original.pngMemesHaiku-wide-icon.pngHaikuLaconicLibrary science symbol .svg SourceSetting


  • The ending song jokingly and mockingly references Black Mesa. Songwriter Jonathan Coulton also namedrops another of his popular songs, "I Feel Fantastic".
  • Doug Rattmann's den in the Companion Cube level also contains a rather well-hidden shout out to Isaac Asimov's short story "Escape". His dens all have some poems altered to include cubes and the like. Here is a full list of the graffiti drawings.

Portal 2

  • You can find a drydock, with a life preserver titled "Borealis" next to it. The Borealis is where Gordon Freeman will likely go next in the series.
  • Cave Johnson implies that Black Mesa has stolen more than one of his inventions.

Cave Johnson: Black Mesa can eat my bankrupt-
Caroline: Sir? The testing?


Portal 2 Perpetual Testing Initiative

  • In the YouTube promo, Cave Johnson starts off talking about his father, "a Professor of Farming at the local Farm College." Cave Johnson's voice actor, JK Simmons, appears in a series of commercials for Farmers Insurance as a professor at the fictitious "University of Farmers".
  • One of the parallel Caves mentions Soylent Green.

Cave: Memo says Soylent Green is...let's see...doubling in price. Now, I don't care how good people tastes, it's costing us more than lobster so we're all going back to fish-sticks.


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