This subject is related to a real world perspective.
This subject is related to the Combine era.
This is a featured article. Click for more information.

Half-Life 2 ARG

From Combine OverWiki, the original Half-Life wiki and Portal wiki
Jump to: navigation, search

This subject is related to a real world perspective.
This subject is related to the Combine era.
This is a featured article. Click for more information.

Questionmark.svg The title of this article is unofficial.

Although this article is based on official information, the actual name of this subject was created for the wiki.

The Half-Life 2 ARG was a series of tests created by Valve in 2004 to promote the upcoming release of Half-Life 2. It was conducted through the game's official website, Steam, and an actual visit to the company's headquarters.

The first test[edit]

The ARG began on June 23, 2004 when a (now known as ValveTime) user, Merc, traveled to Valve's offices to playtest an early build of Half-Life 2. He returned to the community with photos from the tour including an image of a whiteboard with peculiar writing on it seemingly related to the game.[1] Another forum user, Lanthanide, found an encrypted message encoded in ROT13 in the whiteboard's writing. The decrypted message was the URL

When entered, the website asked for a username and password. It was later discovered that the whiteboard photo was incomplete due to part of it being cut off in the original picture, leaving the test unsolvable. When the company was contacted, Valve's Erik Johnson revealed the access details for the page: "Username: valve" and "Password: 437N452". This opened a page with a picture of the G-Man and a congratulatory message stating "Hello Your cleverness is noted; you've passed the first test." The source code for the page included the keywords "congratulations, cleverness, illicit, snapshots" along with ASCII art images of Gordon Freeman and a bird identified as a robin originating from an ASCII art collection created by ASCII artist Joan Stark. This bird had previously been posted by Valve designer Greg Coomer on the forums.[2]

The second test[edit]

On August 28, 2004, another user, Calhoun, discovered a short text message hidden inside a picture of the G-Man (materials/models/gman/gman.jpg) located in the game file package base source shared materials.gcf, available at the time as part of the initial Half-Life 2 preload and the public Counter-Strike: Source beta. The message was "password is nova/prospekt this is the second test".[3] These access details did not work on the page for the first test.

On August 31, 2004, the community discovered a hidden link in the media section of Half-Life 2's official website.[4] Instead of a zoom icon on the thumbnail, the sixth screenshot changed to a picture of the G-Man named "GMANSECONDTEST.gif" when highlighted.[5] When clicked, it opened the URL This page asked for a username and a password, the earlier discovered "nova" and "prospekt" phrases working here. This took users to a black page with a text input box in the middle. The source code for the page had an ASCII art image of Alyx Vance, the same bird that had been included before, and the incomplete URL /secret/secondtest/whatsmyname.jpg, a hint to solve the puzzle. When viewed, the "whatsmyname.jpg" image was found to depict a Barnacle in Half-Life. Entering the word "Barnacle" in the page's input box revealed Half-Life 2 artwork of the creature attacking Gordon in the canals.


Throughout 2004, Valve employees posted several links to Half-Life 2 images that were hosted under the address

  • On June 18, Erik Johnson posted concept art of the Citadel on[6]
  • On June 19, Greg Coomer posted a model render of a Strider in response to a thread on discussing why Half-Life 2 would be better than other first person shooter titles.[7]
  • On August 5, Coomer also posted a thread on linking to a hidden page that contained three new screenshots from the game.[8] The source code for this page included the familiar ASCII art bird as well as a new image of the G-Man.

On September 23, 2004, the page was discovered by the community.[9] This page was home to a short text adventure game based on Half-Life 2 called "Half-Life 2: PHP". This was confirmed by Valve's Chris Bokitch to not be related to the previous tests.[10]


First test[edit]

Second test[edit]

Secret page[edit]


  1. Back from another... trip to Valve! on ValveTime (June 23, 2004)
  2. Typing Art on ValveTime (June 17, 2004)
  3. The second test on ValveTime (August 28, 2004)
  4. I found something (second test solved?) on ValveTime (August 31, 2004)
  5. Media page on Official Half-Life 2 website (September 1, 2004) (archived)
  6. Citadel Concept Art on (June 19, 2004) (archived)
  7. What Makes Half-Life 2 Better Then Other First Person Shooters! on ValveTime (June 19, 2004)
  8. Some new screenshots on ValveTime (August 5, 2004)
  9. hl2.php on ValveTime (September 23, 2004)
  10. Second test on Steam Users Forums (September 1, 2004) (archived)