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Easter eggs

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This page contains a list of Easter eggs featured in the Half-Life and Portal series.

Half-Life and expansions[edit]


Half-Life: Opposing Force[edit]

Half-Life: Blue Shift[edit]

Half-Life: Decay[edit]

Half-Life 2 and episodes[edit]

Half-Life 2[edit]

Half-Life 2 leak[edit]

  • There is a line[i] that was to be said by a security guard in a port of the Hazard Course from the original game. The line is: "Sorry, sir. You know I can't let you through here without your good friend Superfly Johnson. Wa hah. Just kidding, Gordon. You go on through. Hah haha!". This is a reference to Superfly Johnson character from the video game Daikatana, best known for his poor pathfinding skills. He is an ally, and has to follow the player through some levels. If the player reaches a loading point and the character is not with the player, the player character will say: "I can't leave without my buddy, Superfly!". It also a reference to a line[i] said by the security guard when Gordon tries to go through a checkpoint without his suit on. The line is: "Sorry, Mr. Freeman, I got explicit orders not to let you through without your hazard suit on."

Half-Life 2: Episode One[edit]

Half-Life 2: Episode Two[edit]

Portal series[edit]


Portal 2[edit]

Source SDK[edit]

  • The icon used for Hammer's obsolete entities consists of what presumably is the head of Jay Stelly pasted on the bust of Fonzie from the TV sitcom Happy Days, with his trademarks thumb up and leather jacket.
  • Typing the example coordinates "200 -4096 1154" into the "Go To Coordinates" dialog in Hammer results in a dialog appearing, which reads "Seriously? (I mean, that was just an example, you were supposed to type in your own numbers)".
  • A line in the file sdk_weapon_parse.cpp from the 2013 edition of the Source SDK features a nod to Douglas Adams, author of the series The Hitchhiker's Guide to the Galaxy, and its number 42: m_iDamage = pKeyValuesData->GetInt("Damage", 42) // Douglas Adams 1952 - 2001.


  1. The girl in Gordon's locker turns 14 today on Reddit (January 3, 2012)
  2. YouTube favicon.png Half-Life (PS2) - Toilet Scientists Conversation Easter Egg on YouTube (June 8, 2011)
  3. Personal Touches in Borderlands: The Pre-Sequel on Gearbox Software's official website (December 11, 2014)
  4. John Faulkenbury's comment on The Easter Egg Archive
  5. YouTube favicon.png dsbossit.wav - Original and Reversed (OpFor Easter Egg) on YouTube (June 16, 2011)
  6. Happy Easter! on Uncle Andrew dot Net (November 19, 2014) (archived)
  7. Twitter favicon.png Matt Wood's tweet on Twitter (June 13, 2019)
  8. Twitter favicon.png ValveTime's tweet on Twitter (April 24, 2017)
  9. Half-Life 2: Episode Two commentary
  10. Twitter favicon.png ValveTime's tweet on Twitter (July 20, 2017)

See also[edit]