Make your mod sync to other players

Give your mod a download source Side Hustle can use. A player who joins a lobby without your mod then gets it installed, or gets a direct link.

You need: a released mod. For the gamemode fields, a registered gamemode.

How Side Hustle finds your mod

The host lists every loaded mod with its version and SHA256 hash. For each mod it picks one source:

Source	What the joining player gets
Thunderstore has a package with the installed version	Automatic install
downloadLink points at a GitHub repository	Automatic download from its releases
downloadLink points at Nexus, Thunderstore or doodesch.de	A checklist entry with that link
No usable source	Nothing. The player joins without your mod.

Every download is checked against the host’s hash. A file with a different hash is never installed. The Thunderstore build of Side Hustle downloads no code. There, every mod is a checklist entry.

Steps

1. Set downloadLink, the fifth argument of MelonInfo. Use an https link.

   [assembly: MelonInfo(typeof(Core), "Your Mod", "1.2.0", "You", "https://github.com/you/YourMod")]

2. Tag each GitHub release with the version from MelonInfo. v1.2.0, 1.2.0 and 1.2.0.0 all match.

3. Attach the DLL, or a zip with the DLL, as a release asset. Side Hustle reads up to 3 .dll or .zip assets of up to 50 MB.

4. Upload the same DLL file to every store. A rebuild has a different hash, and the download fails the check.

5. Keep secrets out of setting names you want synced. The host can sync mod settings to the session. A category with an entry name that contains token, secret, password, webhook, apikey or api_key is off by default, because lobby data is public.

For a gamemode

Set these on your GamemodeDescriptor:

DownloadUrl = "https://thunderstore.io/c/schedule-i/p/You/YourMode/",
Advertise = true,

• Players without your gamemode see its public lobbies with a “Download the mod” button. The button opens DownloadUrl.
• Only links to Thunderstore, Nexus, GitHub and doodesch.de open. Other links show but do not open.
• Advertise = false hides your lobbies from players without your gamemode. Use it while your gamemode is in development.

Check it works

1. Open the classic host form for a vanilla co-op lobby with your mod loaded.

2. The “Mod sync” note counts your mod: “install automatically”, “need a download link” or “cannot sync”.

   

3. For a gamemode lobby, the host log shows [mp] join mod set published: N file(s) (A auto, G github, L link, U unsourced).

4. Join from a second instance without your mod. Your mod shows as an automatic install or as a checklist entry with your link.

   

Next

• Troubleshoot Side Hustle