The two ways to mod

PathWhen to use it
Moon Sweepers Mod LoaderThe lightweight route - one-click installer, loads every mod .dll in the game's Mods folder. Required by Team Upgrades, Team Vehicles, Sleep, Logistics Fix and Full Refunds.
BepInEx 6 + patcherNeeded for plugin-style mods like Landmark Radar. Stock BepInEx fails on this game (see below) - you need the community patcher first.
Save editorsNo loader at all - they edit your save file directly and survive game updates.

The BepInEx problem everyone hits

Stock BepInEx 6 cannot load Moon Sweepers mods. The game is built on Unity 6000.6 with IL2CPP metadata version 108, but BepInEx's bundled Cpp2IL stops at 106 - it throws "Unsupported metadata version" and loads nothing. The MoonSweepers BepInEx Patcher fixes this; install it before any BepInEx plugin.

Mods worth installing

ModWhat it does
More Money - Save EditorAdds any amount to your crew wallet by editing the save - no game files touched, survives updates, with automatic backup and one-click restore.
Landmark RadarFlags landing sites, stations and surface distances with optional beams (BepInEx plugin - needs the patcher).
Team Upgrades / Team VehiclesExtends upgrades and vehicles to co-op teammates (Mod Loader).
Logistics FixPatches the conveyor/merger behavior that Vanilla leaves broken for joining players (Mod Loader).
Full Refunds / SleepQuality-of-life: full refund on sales and a sleep option (Mod Loader).

All of these live on the Moon Sweepers section of Nexus Mods - the scene is tiny (8 files at launch week) so the list is easy to keep up with.

Install notes that save you pain

FAQ

Are there mods for Moon Sweepers?

Yes - a small but real scene on Nexus Mods: a dedicated mod loader, save editors, radar and co-op fixes. About 8 files in launch week.

Do mods work in co-op?

Save editors are safe since they only touch your file. Gameplay mods can desync if the lobby isn't running the same setup - keep modded lobbies to modded friends.

Why won't BepInEx load my mods?

Unity 6000.6 / IL2CPP metadata 108 is newer than stock BepInEx supports. Install the MoonSweepers BepInEx Patcher first.

Can mods get me banned?

Moon Sweepers has no anti-cheat - mods are a co-op courtesy issue, not a ban risk. Still, modded gameplay changes can ruin a shared lobby's economy, so coordinate first.