Moon Sweepers

Co-op progress, host saves and automatic backups

The crew works on the host’s world. Agree on the host and shared spending before starting, and do not confuse local automatic backups with Steam Cloud.

GuideSpawn · Checked Oct 31, 2026

Choose the host and coordinate purchases

Steam advertises up to 16 players; Wikily’s community multiplayer guide clarifies that this includes the host. It says the wallet and upgrades are shared, while tools and vehicles belong to individual players. A shared upgrade purchase therefore should not be budgeted as a separate purchase for every crewmate. The same community source says everyone plays on the host’s save and the session ends when the host leaves. Our planning suggestion is to choose the regular host before investing in that Moon; this is not evidence of a host-transfer feature.

Sources: [1][2]

Understand what the backup system preserves

Official patch 1.0.4 adds up to 5 full backups per save slot, created 1 minute into each session and then every 30 minutes. They are stored outside Steam Cloud. The game attempts automatic repair from backups when a damaged world loads, and checks damaged files after a crash on the next start. This is a recovery mechanism with a schedule, not a promise that the latest action is backed up. The community save guide locates backups beneath AppData/LocalLow/DragDropGames/MoonSweepers/Backups; these sources do not establish a manual restore procedure here.

Sources: [3][4]

Check access and version before inviting others

Official patch 1.0.5 adds a warning when starting or switching to a public game and points hosts to YOUR CREW in the ESC menu for kick or ban controls. Wikily says public visitors can change the Moon and spend shared funds; Friends only and Invite only are alternatives. It also says joining requires the same version as the host. Official patch 1.0.4 warns that saves created there cannot open in older versions, so downgrading is not a safe assumption for restoring compatibility. Shared ownership details above are community documentation, not our own co-op test.

Sources: [5][3][2]

Sources

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JOONAS not delivering? Check capsule catcher groupsDiagnose a full JOONAS bin, uneven catcher filling and the delivery changes in recent patches.Unlock Auto-Packer without confusing it with PackagerFollow the container and Dust Compactor prerequisites, and budget for the upgrade you actually need.Move buildings and diagnose production bottlenecksUse the updated move controls, then check machine power and separate material inputs.Patch fixes, Proton and the planned updateSeparate shipped performance fixes from platform claims and the unreleased content roadmap.