Solo, Co-op & Offline · Source-led
Can You Play Moon Sweepers Offline? Launch and Save Limits
Quick answer
A single-player mode is confirmed, but the checked official pages do not say whether the installed game can launch in Steam Offline Mode. The store lists a broadband connection in both the minimum and recommended requirements. Local saves and five backups per slot are confirmed; online co-op needs Steam.
Known scope
What is actually known
| Question | Evidence status | Practical reading |
|---|---|---|
| Is there a single-player mode? | Confirmed by the Steam page. | You can play without a crew. |
| Can the game launch in Steam Offline Mode? | No official statement found. | Test it with a backed-up save; do not assume. |
| Does the game need a connection? | Steam lists broadband in both requirement sets. | The listing does not explain whether that is for co-op, launch or both. |
| Are saves local? | Yes; the backup folder is on the local disk. | Keep the local backup before testing anything risky. |
| Does co-op need Steam? | Yes; the crew layer runs through Steam. | Online co-op is not an offline mode. |
A game can list a network requirement for its online co-op or storefront integration and still run solo. Another game can require a connection for its first launch. The store text here does not settle which case applies, so this page does not turn “single-player” into “offline.”
Saves
Local saves and the 1.0.4 backup system
The game uses five save slots. Each slot keeps up to five full backups: the first a minute into a session, then one every 30 minutes. The backup folder is %USERPROFILE%AppDataLocalLowDragDropGamesMoonSweepersBackupsslot-<n>. The files are stored outside Steam Cloud, and the game checks for damaged saves on load.
When you reconnect, the local save is still the local save. The checked material does not say whether a save created entirely offline will synchronize automatically to Steam Cloud on reconnect. Load the slot and confirm the timestamp before letting another device overwrite it.
- The local backup protects against a bad build, a failed experiment or a corrupted save.
- Steam Cloud is a separate copy path; do not treat it as the backup folder.
- A 1.0.4 save cannot be opened in an older version. Back up before downgrading or testing a mod.
- After a crash, the next start checks the save and can repair a damaged file.
Offline test
A safe offline test
- 01
Back up the current slot
Copy the save slot and its backup folder before changing Steam's mode. Do not rely on the cloud copy alone.
- 02
Start Steam in Offline Mode
Use Steam's Offline Mode, not a disabled network adapter, so the client has a supported transition. Launch Moon Sweepers from the installed library.
- 03
Load a disposable world
If the game reaches the main menu, load a test slot. Do not open the only copy of a long-running world first.
- 04
Play, save, quit and reconnect
Sweep a short area, save and quit. Reconnect Steam and load the same slot again. If the world loads and the new save is present, the test passed for your machine and build; it is still not an official compatibility statement.
Co-op
What definitely needs a connection
Online co-op uses Steam invitations and a host's Moon. It cannot work without the Steam crew layer. The single-player route is the only mode that can plausibly run without another player; it is still a separate question whether Steam's client must be online.
Straight answers
Questions about this task
Can you play Moon Sweepers offline?
The checked official pages do not confirm offline launch. Single-player exists, and local saves exist, but Steam lists a broadband connection in its requirements. Test with a backup instead of assuming it works.
Does Steam Offline Mode work with Moon Sweepers?
No official compatibility statement was found. The game's crew layer uses Steam; whether Steam Offline Mode passes the launch check is not documented in the material checked for this page.
Are saves stored on my PC?
Yes. The game keeps local save slots and backups outside Steam Cloud at the documented AppData path.
Trace the answer
Sources and scope
This is an independent, source-led guide, not a first-hand playtest. Gameplay values, build-menu details and UI behavior are checked against the 1.0.4 data snapshot and official patch notes. Your installed build is the final authority.
- Official Moon Sweepers on Steam Official store description, release date, modes and requirements. Checked 28 Oct 2026.
- Reference Wikily: Save slots and backups Moon Sweepers 1.0.4 data index, checked 28 Oct 2026. Useful for build-menu values; not an official developer page.
- Reference Wikily: Multiplayer and Steam Moon Sweepers 1.0.4 data index, checked 28 Oct 2026. Useful for build-menu values; not an official developer page.
- Official Moon Sweepers 1.0.4 patch notes Official patch notes, 25 Oct 2026.
- Official Steam news API Official patch text for the local backup and crash-repair changes, 25 Oct 2026.