Crimson Moon Co-op and Troubleshooting Guide

How to Start Co-op

Start at the portal in Sanctus Clypeus. Open the co-op menu by holding the invite button shown at the top left of the screen. The following paths come from the official co-op instructions.

Host a public or private game

1. Select Host Game.
2. Choose private for friends or code-only access, or public for matchmaking.
3. Share the session code with the player you want to join.

Invite a platform friend

1. Host a private session.
2. Open the friends list using the smiley-face icon.
3. Choose an online friend who owns Crimson Moon, then select invite.

Join through Quick Match

1. Open the invite menu and choose Quick Match.
2. Wait for matchmaking to connect you to an active public session.

Join with a code

1. Open the invite menu and select Join Via Code.
2. Enter the host's session code and choose submit.

Before a fresh Run, both players should prepare their starting equipment. Mid-Run joining is supported, but the arriving player starts with starter equipment. Invitation failures remain a separate known issue; see troubleshooting if the menu flow does not complete.

Crossplay and Platforms

The developers confirm full cross-platform play across supported platforms. Quick Match and Join Codes are also official launch features.

What Should Happen Between Missions

Developer AMA 2 says both players return to the same Sanctus Clypeus lobby, remain in the party, use hub progression services, and continue the Run. A completed District restores the Life Pool before the next Mission.

The September 2 developer clarification confirms that the Loadout Station stays locked between Missions in an active Run. Players can still use available vendors, permanent upgrades, and field gear, but must prepare their starting Loadout before the Run.

See the save and resume rules before changing hosts or ending a session.

What Is Shared and What Is Separate

The official support material does not define Gear ownership, Gold ownership, all Scroll-credit cases, or every guest reward. Treat the field tests as warnings for planning a session, not permanent rules for every platform and patch.

Guest Scroll pickup has since been confirmed as a bug by the developer; it is not intended host-only ownership.

Host, guest and continuing later

For a shared co-op session, the official Run guide assigns the route to the host. Keep the same host when resuming together. Since Hotfix 1.0.1, the guest can also retain Run progress and continue solo. That change does not establish that every quest reward, Scroll or dropped item is credited to both accounts.

After a disconnect, first check whether the guest can continue alone. Compare character level, Mission, Stone progress, purified Gear and quest rewards on both accounts before starting a new Run. Missing permanent progress belongs in the save-loss checklist.

Co-op fixes and open issues

Checked September 30 against the published patch record. The launch support notice is useful history, not the current list of unfixed problems.

Launch footage: historical reports

These observations describe launch footage, not a fresh test of 1.0.1. Scroll pickup is now confirmed separately in the current issue table.

• A cross-region United States and Portugal session showed severe input delay, delayed hit registration, and frame drops for the guest.
• The guest's Angelic Grace meter appeared not to gain charge for most of one Mission.
• Several Lore Scrolls and one interaction could not be used by the guest.
• A guest was removed at the moment a World Boss died.
• Weapon Arts sometimes passed through enemies or dealt no damage, including during the co-op boss fight.

If your co-op session fails

1. Compare the installed version on both devices and read the current issue table above.
2. Note the host, join method, Mission and last action before the problem.
3. After a disconnect, check the guest solo-continuation option before abandoning the Run.
4. Check both characters for missing permanent progress or rewards.
5. Send a reproducible report through official support, with both platforms, versions and screenshots.

A workaround reported for one device is not a universal fix. Avoid replacing saves to solve an invitation or Scroll-pickup problem.

Co-op Build Tips

There are no formal team-up moves. Gear, Weapon Arts, Boons, and status effects provide the main interactions. The developers describe one player applying Mark or another status while the partner equips effects that benefit from it.

• Agree on who applies the status and who triggers its payoff before deployment.
• Split damage, control, and survival duties instead of duplicating a narrow role.
• Save at least one Angel transformation for a dangerous elite pack or boss phase.
• Remember that shared lives make simultaneous deaths much more expensive.
• Discuss Equipment drops before either player Stores or Equips the item.

The status glossary explains what Marked, Rage and Sunderance actually do; shared stack behavior across both players still needs verification.

Solo content and co-op achievements

The developers describe story content, enemies, levels and collection goals as available solo. The Steam achievement Slay Together is an exception for completion hunters: it requires finishing a Mission in co-op. See the achievement goals before planning an entirely solo completion.

Frequently Asked Questions