Host a Space Engineers server for your friends
Space Engineers is on our roadmap, not in the launch catalog yet. Votes from the waitlist decide how fast it ships.
Host a Space Engineers server free- RAM
- 8-16 GB
- Default server ports
- 27016
- Protocol
- UDP
- Server OS
- Windows
- Typical group
- 2-8 friends
You never forward any of these. The agent connects outward to our relay; the game's ports stay on your machine.
Why host Space Engineers with Multiplayer Rally
Ten-plus years of engineering-sandbox community, with a free official dedicated server and official docs from Keen. Big worlds with lots of grids are what push the RAM needs up.
- Heavy server: Space Engineers is one of the bigger ones, around 8-16 GB. You'll want a PC with that much RAM to spare on top of everything else.
- Runs the official Space Engineers server on Windows. We download it from the publisher and keep the runtime patched.
- Your Space Engineers world stays set up between sessions. The app handles restarts, updates, and the relay link so the squad can drop in whenever you're online.
How hosting Space Engineers works
- Step 01
Install Multiplayer Rally
One Windows app. It installs and manages the Space Engineers dedicated server for you. No command line, no config files.
- Step 02
Pick Space Engineers
We set the ports, the settings, and the restart schedule. You pick the world name and who's allowed in.
- Step 03
Share your link
You get one address your friends paste into the game, and they're in. Nothing to install on their side, no port forwarding on yours.
Space Engineers hosting questions
Plan on 8-16 GB of free RAM for a friend-group server. Your PC needs that on top of whatever else it's running; the app checks before installing.
27016 (UDP). With Multiplayer Rally you don't forward any of them: the agent makes an outbound connection to our relay, and your friends connect to the relay address.
Yes, that's the whole point. The agent on your PC makes an outbound connection to our relay, so you never touch your router. Your friends connect to the relay address and the traffic is tunneled to your Space Engineers server. Nothing is exposed to the open internet.
Yes. Each player needs their own copy of Space Engineers to join your server. We host the server side; the game itself comes from the store like always.
Space Engineers is on the roadmap behind the launch catalog. Joining the waitlist and naming it is a vote: demand decides the order we ship recipes.
Your PC is the server, so the world is offline until you turn it back on, then it's right where you left it. The agent restarts Space Engineers for you automatically. An always-on managed tier on our hardware comes later.