View source for 2020

{{Status|RealWorld}}

==Events==
===March===
'''March 3'''
*''[[Halo: Combat Evolved Anniversary]]'' becomes available for ''[[Halo: The Master Chief Collection|The Master Chief Collection]]'' on PC/Steam.

===May===
'''May 12'''
*''[[Halo 2: Anniversary]]'' becomes available for ''The Master Chief Collection'' on PC/Steam.

===July===
'''July 13'''
*''[[Halo 3]]'' becomes available for ''The Master Chief Collection'' on PC/Steam, alongside the launch of [[Season 2: Spark]].{{Ref/Note|This article uses the [[Wikipedia:Pacific Time Zone|Pacific Time Zone]] to determine the release date.}}

'''July 23'''
*''[[Halo Infinite]]''{{'}}s Campaign mode is showcased at the Xbox Games Showcase.

===September===
'''September 21'''
*''[[Halo 3: ODST]]'' is released for ''The Master Chief Collection'' on PC, with the addition of [[Firefight (Halo 3: ODST)|Firefight]] to the collection on all platforms and the launch of [[Series 3: Recon]].

'''September 22'''
*''[[Halo: Shadows of Reach]]'' was originally set to be released, before being delayed until October 20.

===October===
'''October 20'''
*''Halo: Shadows of Reach'' is released.

===November===
'''November 10'''
*[[Xbox Series X/S|Xbox Series X{{!}}S]] and [[Xbox Series X/S#Xbox Series S|Xbox Series S]] are launched globally.

'''November 16'''
*''[[Halo 4]]'' becomes available for ''The Master Chief Collection'' on PC/Steam, alongside the launch of [[Series 4: Reclaimer]].{{Ref/Site|D=01|M=6|Y=2020|URL=https://twitter.com/Halo/status/1328552562220437504?s=20|Site=Twitter|Page=#Halo 4}}

===December===
'''December 18'''
*As part of sunsetting the original Xbox 360 titles, digital sales of Halo [[Xbox 360]] titles were halted. This also lead to a majority of the Halo-based Xbox 360 trailers and Demos like the [[Halo Wars Demo]], the [[Halo: Reach Demo]], and [[Halo: Spartan Assault Lite#Trial Game - Halo: Spartan Assault|Trial Game - ''Halo: Spartan Assault'']] being delisted.{{Ref/Site|Id=HWSunset|URL=https://www.halowaypoint.com/en-us/news/sunsetting-halo-xbox-360-game-services-in-2021|Site=Halo Waypoint|Page=SUNSETTING HALO XBOX 360 GAME SERVICES IN 2021|D=3|M=1|Y=2021}}

'''December 29'''
*''[[The Art of Halo Infinite]]'' was originally set to be released, before being delayed until [[2021 (real world)|2021]].{{Ref/Site|D=01|M=6|Y=2020|URL=https://www.amazon.com/dp/1506720080|Site=Amazon|Page=The Art of Halo Infinite}}

==Notes ==
{{Ref/Notes}}

==Sources==
{{Ref/Sources}}

{{Timeline}}