Co-op: accounts, friends, rooms and revives

Guide updated October 14, 2026

Both players need the original game’s cloud accounts and public nicknames. Add the friend, have the other player accept, invite them while they are online and not already playing, then wait for both members to appear connected before the host starts. Rooms hold up to four players; a fallen teammate revives after three seconds beside a living ally.

Host and guest: the full room sequence

Both players: sign in to the original online game with cloud accounts. Open Friends, choose a nickname and Save nickname. Nicknames use 3–16 letters, numbers or _.
Host: enter the friend’s exact nickname and press Add friend. Friend: accept the request in Friends. A sent request is not yet an accepted friendship.
Host: when the accepted friend is Online, choose Invite. Guest: choose Join on the room invitation. The room holds four players including the host.
Wait until peers show Connected; then the host chooses Start game. Guests enter together when the host starts, not from their own separate solo run.
Keep the host tab active. Item/Bond choices and an inactive host tab pause shared play. Revive a fallen teammate by staying close for 3 s while keeping incoming warnings clear.

Room and in-run rules

Scroll sideways to read every column.

What you see	What to do	Success / next step
Start button disabled	Only the host starts, with at least two members and no connecting/failed peer. Check each member’s connection message.	All intended players are in the room and connected; the host can start one shared run.
A teammate is down	Stand close for three seconds while alive. The source uses a 56-world-unit helper radius; stepping away lets the revive progress decay.	The teammate returns at 50% maximum HP. If everyone is down, the group run ends.
Everyone pauses during an item/Bond choice or host tab switch	Finish the shared choice or bring the host’s game tab back. Your ordinary personal pause menu alone is different and does not stop other players.	Shared simulation resumes after the choice/host returns; do not treat this expected pause as lost progress.

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Game data & sources

The linked game files show where these stats, costs and rules come from. Updates to the game may change them.

Data version: a9b21f09

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