User:Rezalon/Sandbox1

This sandbox is used to list official media from Valve's Half-Life and Portal multiverse, sorted by in-universe chronological order. Because of the ambiguity of when exactly most material in the franchise is set, and its anachronisms, this list is separated into sections by each respective era, and makes use of guesstimating. Dates are formatted as DD/MM/YYYY.

This list excludes (unless stated why otherwise):

• Media that doesn't follow a connected narrative (multiplayer, game manuals, strategy guides, development books, etc.).
• Supplementary material such as ApertureScience.com, ARGs, and developer references.
• Cut or cancelled media.

20th Century

Title	Time Period	Release Date	Type	Notes
Aperture Desk Job	Circa 1970s	01/03/2022	Tech demo	Set in an alternate universe where Cave Johnson becomes an A.I. instead of Caroline. The game's aesthetics suggests it takes place in the '70s, and presents the invention of the Aperture Science Sentry Turret, placing this before Turret Lullaby.
Turret Lullaby		02/10/2011	Portal 2 comic	Must take place sometime before Cave Johnson contracts moon rock poisoning in the 1980s, as he narrates an Investment Opportunity video on YouTube, released posthumously copyrighted 1998, featuring the consumer version of the Aperture Science Sentry Turret, without sounding ill.
Perpetual Testing Initiative	1988	08/05/2012	Portal 2 level editor	Dated per the PeTI trailer on YouTube. PeTI takes place across the multiverse with no direct connection to the primary HL/P universe.
The Lab	1989	05/04/2016	VR tech demo	Dated per Relic 84-J diagram. The Lab takes place across several pocket universes with no direct connection to the primary HL/P universe.

The Black Mesa Incident

• Some information in this section is taken from the timeline of the Black Mesa Incident created by User:Marphy.
• Although the official year Valve gives for the the Black Mesa Incident occurring in is "200-", pre-release information from Raising the Bar suggests the original intention of it taking place in 2003. Whilst this is cut, non-canon, and unofficial dating, it will be used in this list for the sake of rounding.

Title	Time Period	Release Date	Type	Notes
Adrian Shephard's diary	03/05/2003 - 15/05/2003	18/11/1999	OF manual	Considering the BMI occurs on May 16, and the final diary entry suggests it occurs "tomorrow", after March 15, it is assumed "March" in the diary erroneously refers to May.
Opposing Force Boot Camp	07/05/2003		OF tutorial	Dated per the instruction manual.
Blue Shift Hazard Course	Begins 8:00 AM, 12/05/2003	15/06/2001	BS tutorial	Dated and timed per the instruction manual.
Half-Life Hazard Course	Begins 7:30 AM, 16/05/2003	19/11/1998	HL tutorial
Half-Life: Decay	Morning - Evening, 16/05/2003	14/11/2001	HL PS2 co-op campaign	Dated per the instruction manual. Must start before Half-Life as Dr.s Cross and Green arrive to work before the late Dr. Freeman.
Half-Life: Blue Shift	8:42 AM, 16/05/2003 - Morning, 17/05/2003	15/06/2001	HL expandalone	Dated per the instruction manual. Starts before Half-Life and must start after Decay as Gordon Freeman is witnessed travelling and arriving to work late, and Gina Cross is seen delivering the sample.
Half-Life	8:47 AM, 16/05/2003 - Evening, 17/05/2003	19/11/1998	Video game	Dated per the instruction manual.
Half-Life: Uplink	Evening, 17/05/2003	12/02/1999	HL demo	Generally considered non-canon, Uplink can easily fit into the storyline during the Lambda Core chapter as per the Half-Life Uplink Addon mod. It is assumed the "+48.00 HRS" in the intro text erroneously refers to the day after the Resonance Cascade.
Xen Attacks	17/05/2003	14/11/2001	Decay bonus mission	Placed per Marphy's timeline. X-8973 and R-4913 are later encountered by Cpl. Shephard during the mortar section of The Package.
Half-Life: Opposing Force	Afternoon, 17/05/2003 - 18/05/2003	18/11/1999	HL expandalone	Dated per the instruction manual and Marphy's timeline. Although the Incoming chapter takes place before Xen Attacks, the rest of Opposing Force takes place during and after it.

Combine occupation of Earth

Title	Time Period	Release Date	Type	Notes
Portal	Circa 2010	10/10/2007	Video Game	"[Takes] place somewhere around the year 2010".
Portal 2: Lab Rat		08/04/2011	Portal 2 comic	Takes place during the final moments of, and after, Portal.
Half-Life: Alyx	Circa 2017	23/03/2020	VR Game	Takes place five years before the events of Half-Life 2 and its Episodes.
Half-Life 2	Circa 2022	16/11/2004	Video Game	Takes place "nearly two decades" after the events of Half-Life, over the course of a little over a week.
Half-Life 2: Episode One		01/06/2006	HL 2 expandalone	Takes place "a few days" after the events of Half-Life 2.
Half-Life 2: Episode Two		10/10/2007		Takes place a day after the events of Episode One.
Alyx epilogue		23/03/2020	Alyx post-credits scene	As the post-credits scene comes from Freeman's point of view immediately after the events of Episode Two, this has been separated and moved down accordingly.

Far Future

Title	Time Period	Release Date	Type	Notes
Portal 2	Circa 52,003	18/04/2011	Video Game	Takes place "at least 50,000 years" after Half-Life.
Cooperative Testing Initiative			Portal 2 co-op campaign
Peer Review		04/10/2011	Portal 2 co-op course	Takes place a week after the previous courses.