User:Rezalon/Sandbox1

This sandbox is being used to list Half-Life and Portal media, sorted by in-universe chronological order. Because of the ambiguity of when exactly most material in the franchise is set, and its many anachronisms, this list is separated into sections by each respective era, and makes use of a heavy amount of guesstimating. Dates are presented as DD/MM/YYYY.

This list excludes (unless stated why otherwise):

• Media that could take place at any point in the timeline or their respective game's setting.
• Media that doesn't follow an in-universe narrative (most game manuals, strategy guides, and development books, developer references, ApertureScience.com, ARGs, etc.).
• Unofficial, dubiously canon, and non-canon materials, and lost or cancelled media.

Pre-Combine

Title	Time Period	Release Date	Type	Notes
Turret Lullaby	Circa 1980s	02/10/2011	Portal 2 Comic	Must take place sometime before Cave Johnson's death in the late 1980s as he narrates an Investment Opportunity video featuring the consumer version of the Aperture Science Sentry Turret, released posthumously copyrighted 1998.
Perpetual Testing Initiative	Circa 1988	08/05/2012	Portal 2 level editor	Time period taken from the copyright notice seen in the PeTI trailer. PeTI takes place across the multiverse with no direct connections to the "real" Half-Life/Portal universe. As such, several elements not developed until after 1988 in the "real" universe may appear across the PeTI multiverse.

The Black Mesa Incident

• Some information in this section is taken from the excellent timeline of the Black Mesa Incident created by Marphy Black, found here.
• Although the official year the Black Mesa Incident occurs is "200-", information from Raising the Bar suggests it takes place in 2003. Whilst this is an 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 16 May, and the final diary entry suggests it occurs "tomorrow", after 15 March, it is assumed "March" in the diary erroneously refers to May.
Boot Camp	07/05/2003		OF tutorial	Dated as per Adrian Shephard's diary.
Security Guard Training	Begins 8:00 AM, 12/05/2003	15/06/2001	BS tutorial	Dated and timed as per the manual for the PS2 release of Half-Life.
H.E.V. Suit Training	Begins 7:30 AM, 16/05/2003	19/11/1998	HL tutorial
Half-Life: Decay	Morning, 16/05/2003 - Evening, 16/05/2003	14/11/2001	HL PS2 co-op campaign	Must start before Half-Life as Dr.s Cross and Green arrive to work on time, as opposed to the late Dr. Freeman.
Half-Life: Blue Shift	8:42 AM, 16/05/2003 - Morning, 17/05/2003	15/06/2001	HL Expandalone	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
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 as 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	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.
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
HL: Alyx post-credits scene		23/03/2020	HL: Alyx cutscene	As the post-credits scene comes from Freeman's point of view, after both the rest of the events of Alyx and Ep. 2, this part of Alyx is 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 Courses		18/04/2011	Portal 2 co-op campaign
Peer Review		04/10/2011	Portal 2 co-op course	Takes place a week after the previous courses.