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Host or Join Listen Servers

A guide to hosting and connecting to multiplayer server instances of HELIX worlds

1. Overview​

Multiplayer in HELIX allows you to host Listen Servers that other players can join, or connect to existing sessions.

  • Pre-requisite: Worlds must be published packages and downloaded locally before hosting or joining.
  • Draft worlds cannot be used for multiplayer.

2. Hosting a Multiplayer Server​

  1. Publish your world as a package.

  2. Download the package locally:

    • The Create Server button is disabled until the package is downloaded.

  3. Go to the world’s detail page and click Create Server.

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  4. Name the server (optional).

  5. Click Create and Join:

    • The session becomes visible to other players in the server list.
    • Anyone can join your session once it appears.

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3. Joining a Multiplayer Server​

You can join in two ways:

Option A: Join from a Specific World​

  • Open the world’s detail page.
  • Go to the Servers tab.
  • See existing sessions for that world.
  • Download the world first if not already downloaded.
  • Click Join.

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Option B: Join from the Global Servers Tab​

  • Go to the Servers tab in the main menu.
  • Switch to the EOS (global) filter.
  • See all active Listen Servers for any world.
  • Download the corresponding world before joining.
  • Click Join.

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4. Current Limitations (Pre-Alpha / Closed Alpha)​

  • You must manually download the world before joining a session:
    • Attempting to join without the download will fail.
  • There is no automatic download & loading screen yet.
    • Planned feature: Automatically fetch required assets when joining.
  • The Servers tab does not currently display which world a session belongs to.
    • Planned fix before public release.

5. Best Practices​

  • Publish and download your world before hosting to avoid delays.
  • Check that all dependencies for your world are downloaded to ensure smooth joining for players.
  • Communicate the world name to players so they can download it before attempting to join.
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