Overview
Halo: Campaign Evolved supports up to four players in online crossplay co-op across PC (Steam), Xbox Series X|S, and PS5. The full 13-mission campaign—including three Operation: METEORITE maps—is playable cooperatively with shared checkpoints, pooled Skull unlock progress, and downed-state revives.
Campaign Remix lobbies let the host stack Skull modifiers before launch—Thunderstorm, Catch, and custom Evolved mutators apply to all four players. Difficulty and Remix settings sync to guests; Legendary Iron co-op runs require unanimous ready confirmation.
Navigation markers in co-op wait until every fireteam member passes them—a known launch issue still open after patch 16.754.404. Stick together on objective routes so markers advance for the whole squad.
Crossplay Setup
Enable crossplay in Settings > Account > Cross-Platform Play on console, or accept the Steam crossplay prompt on first launch. Xbox and PlayStation players need platform online subscriptions; PC players sign in with a Microsoft account linked to Steam app 2806050.
Invite friends through the in-game Social tab or platform overlay. Party size caps at four for campaign; Operation: METEORITE missions enforce synchronized drop zones so mixed PC and console squads spawn together on Legendary.
- PC — Microsoft account linked to Steam 2806050
- Xbox Series X|S — Xbox Live Gold / Game Pass Ultimate
- PS5 — PlayStation Plus required for online co-op
- Crossplay toggle — on by default after first prompt
Split-Screen Host
Console players can host two-player split-screen co-op on Xbox Series X|S and PS5 while still inviting two online guests—four total Spartans in one fireteam. The host console renders at a dynamic resolution target; both local players share Skull progress and Campaign Remix modifiers.
To start split-screen, sign in a second controller on the title screen, then select Co-op Campaign from the main menu. Guest accounts on the second pad do not need Xbox Live or PSN if they play locally only; online slots still require active subscriptions.