Halo: The Master Chief Collection Is Now Playable On Steam Deck - GameSpot

Now you can finish the fight on the go.
The Master Chief Collection brings together four Halo games into one collection for the Xbox One.

Halo: Master Chief Collection Gets Another Big Update; Modern Aiming, Bug Fixes, And More - GameSpot

Uh. What? : r/SteamDeck

Halo Infinite Campaign Co-Op Tested With Steam Deck In The Mix!

Halo Infinite, Gears 5 Are Not Supported On Valve's Steam Deck - GameSpot

Halo: The Master Chief Collection Not An Xbox Play Anywhere Title; Dev Also Talks Cross-Play - GameSpot

Xbox Game Pass Adds Halo: The Master Chief Collection This September - GameSpot

You can now play Halo: The Master Chief Collection's multiplayer on Steam Deck

Xbox Series X/S Will Have Optimized Halo: The Master Chief Collection

Halo: MCC's weirdly great post-launch support continues with Steam Workshop integration

Halo Infinite on Steam Deck Got Updated!