Halo 20th anniversary

Halo 20th anniversary
Start date:	November 3, 2022
End date:	January 12, 2023
Includes content for:	Halo: The Master Chief Collection Halo 2: Anniversary Halo 3 Halo: Reach

The Halo 20th anniversary was an event conducted in Halo: The Master Chief Collection between November 2021 and January 2022. The event was hosted as a part of Series 8: Mythic, and represented part of the shift away from the seasonal model of updates.

Event Exchange

Each week during the Halo 20th aniversary event, new and exclusive items were hosted in The Exchange for purchase with Season Points.

Start date	End date	Limited Time Items
3 November 2021	10 November 2021	Halo 2: Anniversary: Helmet - ORION 2	Halo 2: Anniversary: Chest - ORION 2	Halo 2: Anniversary: Shoulders - ORION 2
		Halo 2: Anniversary: Arms - ORION 2	Halo 2: Anniversary: Legs - ORION 2
10 November 2021	17 November 2021	Halo 3: Back Accessory - The Beast 3	Halo 3: Shoulder Accessory - Duke 2	Halo 3: Eclipse Dream visor color 2
17 November 2021	24 November 2021	Halo 3: Assault Rifle skin - OGX 3	Halo 3: Back Accessory - Last Word 3	Halo 3: Nightscan visor color 2
24 November 2021	1 December 2021	Halo 3: Helmet - MIRAGE 2	Halo 3: Chest - MIRAGE 2	Halo 3: Shoulders - MIRAGE 2
		Halo 3: Arms - MIRAGE 2	Halo 3: Legs - MIRAGE 2
1 December 2021	8 December 2021	Halo 3: Battle Rifle skin - OGX 3	Halo 3: Back Accessory - Rucksack 3	Halo 3: Back Accessory - Thessalian Bow 3
8 December 2021	15 December 2021	Halo: Reach: Utility - Hydration Container 2	Halo 3: Back Accessory - Oaklimb 3	-
		Halo: Reach: Helmet - Blackguard Fallen Equerry 2	Halo 3: Helmet - Blackguard Fallen Equerry 2
15 December 2021	22 December 2021	Halo 3: Back Accessory - FronkBox 3	Halo 3: Shoulder Accessory - Duke 2	Halo 3: Sniper Rifle skin - OGX 3
22 December 2021	29 December 2021	Halo 3: Back Accessory - Grunt Plush 3	Halo 3: Magnum skin - OGX 3	Halo 3: Back Accessory - X-Pack 3
29 December 2021	5 January 2022	Halo 3: Shotgun skin - OGX 3	Halo 3: Rocket Launcher skin - OGX 3	Halo 3: Back Accessory - Taygetus Dory 3
5 January 2022	12 January 2022	Halo 2: Anniversary: Helmet - ORION 2	Halo 2: Anniversary: Chest - ORION 2	Halo 2: Anniversary: Shoulders - ORION 2
		Halo 2: Anniversary: Arms - ORION 2	Halo 2: Anniversary: Legs - ORION 2

Event challenges

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To unlock some of the new exclusive nameplates, players could also complete weekly event challenges.