Half-Life Wiki:Canon

Canon is what refers to all material deemed to be set in the final, "real" Half-Life storyline. Official does not mean canon, see for instance the Gearbox expansions, of which the canonicity has been questioned for years, or the "official" Prima Guides, which sometimes contain goofs, inaccuracies and obsolete information. However, some cut content could be deemed canon if it does not contradict the canon material. For example, the Headcrab Shell launcher or the seagulls eating the Leeches featured in Lost Coast are likely canon, while the Air Exchange, St. Olga or The Consul are not.

On this page are listed all the official material related to the Half-Life universe, with their canonicity level. Games series like the Counter-Strike, Team Fortress, Day of Defeat and Left 4 Dead series are obviously non-canon, therefore they are not listed here and not covered on this wiki to avoid confusion.

Certified canon material

 * Half-Life
 * Half-Life 2
 * Half-Life 2: Episode One
 * ApertureScience.com
 * Portal
 * Half-Life 2: Episode Two
 * Marc Laidlaw Vault on the HalfLife2.net Forums

"Canon unless stated otherwise" material

 * Half-Life: Opposing Force
 * Half-Life: Blue Shift
 * Half-Life: Decay

Prima Guides

 * Half-Life Prima Guide
 * Half-Life: Opposing Force Prima Guide
 * Half-Life 2 Prima Guide
 * Half-Life 2: Episode One Prima Guide
 * The Orange Box Prima Guide
 * Portal Prima Guide

Miscellaneous

 * Codename: Gordon
 * Half-Life: Day One
 * Half-Life 2: Deathmatch
 * Half-Life 2: Survivor
 * Portal: Still Alive

Cut material

 * Anything related to the Half-Life and Half-Life 2 Betas that didn't make it into the final game
 * Get Your Free TVs!
 * Half-Life: Uplink
 * Half-Life 2: Lost Coast