How to Add Steam Workshop Mods to Your Space Engineers Server

Updated October 31, 2026 · By Host Havoc Technical Support Team

Steam Workshop mods can be added to your Space Engineers server directly from the game control panel using the HH Mod Manager. You can browse the Workshop, add whole collections, or paste links, and the Mod Manager adds the mods to the world your server actually loads.

Before you start: A world must be generated on the server before you can install mods. Mods are tied directly to saves. If your server uses crossplay, use mod.io mods instead. See Add mod.io Mods.

Steps

  1. Log in to the Game Control Panel and navigate to your Space Engineers server.
  2. Click the HH Mod Manager icon.
  3. Open the Browse tab and make sure Steam Workshop is selected. Search by name, or sort by Most popular, Most recent or Recently updated. To add a whole collection, switch from Mods to Collections.
  4. Click Add on each mod or collection you want. Your picks collect in a bar at the bottom of the window.
  5. Click Review and add, check the list, and confirm.
  6. Restart your server.

Once the server restarts, the mods will be active. You can monitor the download progress in the Web Console while the server is starting.

You don't need to stop your server before adding mods. If it's running, your changes are applied automatically at the next restart, and the Mod Manager shows a Restart needed notice until then.

Other ways to manage mods

  • Paste links or IDs: On the Add / Import tab, paste Workshop links, Workshop IDs or collection links, or upload a Sandbox_config.sbc. Click Preview to check the list before adding.
  • Load order: On the Mods tab, use the ▲ ▼ buttons to change the order, then click Save. Mods at the top win when two mods change the same thing.
  • Remove mods: On the Mods tab, select the mods and click Remove selected. To remove a whole collection, pick it in the collection filter and click Remove this collection. Only the mods that came from that collection are removed.

Tip: If a mod fails to download and your server won't start (the Web Console shows Unable to download mods), see Fix Mods Not Loading.