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What is Factorio Zone?
Factorio Zone is a hosted service for running a Factorio multiplayer server in the cloud, pitched as free to use. Instead of leaving a gaming PC running 24/7 or configuring port forwarding on your home router, you point the service at your Factorio save and it keeps the game world online for other players to join.
Factorio Zone
H3 Who it suits
- Small friend groups who want a persistent shared map without one person's machine being the always-on host.
- Players behind restrictive networks — CGNAT, dorm or shared connections — where self-hosting is painful.
- Tinkerers testing mods or map setups before committing to a paid server or a dedicated box.
H3 Trade-offs to weigh
- A free hosted server usually comes with fewer resources and less control than a paid host or your own hardware. Expect limits on map size, mod packs or uptime.
- You are trusting a third party with your save file, so keep your own backups.
- If you need guaranteed performance for many players or heavy modpacks, a paid host or self-hosting is the more predictable route.
H3 A practical next step
Before uploading anything, decide what you actually need: a casual world for two or three friends, or a long-running public server. For the former, try the free hosted option and see whether the tick rate holds up; for the latter, compare it against a paid game host or running the server on your own machine. Either way, export a copy of your save first so you can move it elsewhere if the service doesn't fit.
How do I set up a free Factorio server on Factorio Zone?
Setting up a free Factorio server on Factorio Zone means running the game server in the cloud through the site rather than on your own machine. The service is aimed at players who want a persistent multiplayer world without leaving a PC on all night or paying for hosting. The basic flow is: create an account, start a server from the dashboard, and share the connection details with your friends.
What you typically do
- Sign in to Factorio Zone and start a new server from the control panel.
- Choose or upload a save. You can begin a fresh map or continue an existing save file.
- Configure the essentials — map settings, mods, and whether the server should stay online or stop when empty.
- Share the address and credentials with the people you want to play with.
- Manage it from the dashboard — start, stop, restart, and check status.
What to expect from a free tier
Free cloud hosting usually comes with trade-offs you should plan around:
- Resources are shared. Expect limits on memory, CPU, or simultaneous players compared with paid hosting.
- Idle behaviour matters. Some free setups pause or shut down servers with no players, so a world may not tick while everyone is offline.
- Mods add weight. Large mod packs increase memory use, which is often the first limit you hit on a free plan.
- Saves are your responsibility. Keep local backups of important worlds rather than relying only on the hosted copy.
A practical first test
Before committing a long-running base, start a small test server with the mods you actually intend to use and invite one friend. If it stays stable for an evening, scale up. If it struggles, reduce mods or player count first — that is usually cheaper than upgrading hosting.
For alternatives, Factorio covers the official dedicated server and headless setup if you would rather self-host, and community guides can help you compare options.
Can I upload and use my existing Factorio save on Factorio Zone?
Yes. Factorio Zone is built around running a Factorio server in the cloud, and the practical workflow for existing saves is to upload your save file to the service and start the server from it. That is the main reason to use a hosted server rather than your own machine: the world keeps running when you close your laptop, and friends can join without you hosting.
H3 What this looks like in practice
- You have a local save (a
.zipin your Factoriosavesfolder) that you already play solo or with a group. - You upload that file through the service, then launch the server against it.
- The server loads the map, mods and settings as they exist in the save, so progress, blueprints and factory state carry over.
H3 Two things to decide before you upload
- Mods. A save with mods needs those same mods available on the server, and matching versions, or the save may fail to load. If your save is vanilla, this is a non-issue.
- Who owns the ongoing world. Once the server runs in the cloud, decide whether you keep playing locally between sessions and re-upload, or treat the server copy as the source of truth. Mixing the two is the most common way people lose progress.
H3 A sensible first run
- Make a copy of your save and upload the copy, not your only file.
- Start the server and confirm it loads and that you can connect.
- If it loads cleanly, invite one other player to test joining before opening it to everyone.
If you want to compare the free hosted route against running the server yourself, the official game site at Factorio covers the dedicated server and headless options, and the community wiki at Factorio Wiki documents save files and multiplayer setup in detail.
How do I install and manage mods on a Factorio Zone server?
Factorio Zone runs a standard Factorio server for you in the cloud, so mod handling works the way Factorio itself handles it: mods are defined in the server's mod-list.json and the actual mod files live in the mods folder of the server's data directory. Factorio Zone doesn't install mods for you through a separate mod browser; you supply the mod set and the server loads it.
The practical workflow
- Build the mod set locally first. Install the mods you want in your own Factorio client, confirm the game starts and loads a save without errors, then look at your local
mod-list.jsonto see the enabled/disabled state of each mod. - Collect the mod files. Each mod is a
.zipin your localmodsfolder. You need the same.zipfiles (and versions) that yourmod-list.jsonrefers to. - Upload them to the server's mods directory and replace
mod-list.jsonwith your working copy. - Restart the server so it reads the new mod set.
- Verify by checking the server log for mod loading and any version or dependency errors.
Things that commonly go wrong
- Version drift. If the server's Factorio version differs from your client's, mods built for one may refuse to load on the other. Keep the server and the mod set on the same Factorio version.
- Dependencies. Many mods require others (and some require specific versions). A missing dependency stops the server from starting.
- Save compatibility. Adding mods to an existing save usually works; removing mods that placed entities in the world often doesn't. Test on a copy of the save before touching the live one.
mod-list.jsonvs. themodsfolder. Having the zip present isn't enough if the list marks it disabled, and listing a mod isn't enough if the zip is missing. Both must agree.
Managing changes over time
Treat the mod set like configuration: keep your own copy of the mods folder and mod-list.json outside the server, change them there, test locally, then push the whole set at once. That way a bad update is a rollback rather than a debugging session. If you want to compare hosting approaches or read Factorio's own modding documentation, the official sources are Factorio and, for the community mod portal, Factorio Mods.
What are the limits and performance of the free Factorio Zone servers?
Factorio Zone advertises free cloud hosting for Factorio servers, but the site itself provides almost no published detail on CPU, RAM, player caps or uptime guarantees. The practical answer is that limits exist and are enforced, but you should treat them as undisclosed until you see them on Factorio Zone or in your own server panel.
What you can reasonably expect from a free tier
- A shared or small allocation rather than a dedicated machine, so performance depends on other tenants and on how large your factory grows.
- A cap on simultaneous players, and possibly on total server count per account.
- Idle shutdown or restart behaviour, which matters if you want a persistent world.
- No meaningful SLA, so don't build a long-running community server on it without a fallback.
Where performance actually breaks down
Factorio is CPU-bound, not GPU-bound. Late-game bases with thousands of active entities, large bot networks or heavy circuit logic will drop UPS (updates per second) long before RAM becomes the issue. On any free shared host, expect that ceiling to arrive earlier than on hardware you control.
A concrete test before you commit
Start a server, load your largest existing save, and watch UPS while running your normal production for 10–15 minutes. If UPS stays at 60, the free tier is fine for your scale. If it sags below 60 with no players connected, it will only get worse with friends online.
Decision criterion
Use the free tier for small co-op games, testing mods or short sessions. Pay for your own VPS or dedicated hardware once you need 24/7 uptime, predictable UPS at scale, or more than a handful of players. For self-hosting options, the official Factorio site documents the headless server, and community help is available at Factorio Forums.
How do I invite friends to join my Factorio Zone server?
Inviting friends to a Factorio Zone server is a matter of sharing the connection details the service gives you, not sending an in-game invite. Factorio has no built-in friend-invite system for multiplayer; players join by connecting to a server address, so your job is to get that address to them.
Based on how Factorio Zone describes itself—running your Factorio server in the cloud—here is the practical flow:
What to share
Once your server is running, the service will show connection information for it. Pass that along to your friends. In Factorio, joining typically works in one of two ways:
- Public/listed games: If the server is visible in the in-game multiplayer browser, friends can find it by name and join directly.
- Direct connect: Friends use the "Connect to address" option and enter the server address and port you give them.
A concrete scenario
Say you and two friends want to play this weekend. You start the server, copy the address from your Factorio Zone dashboard, and send it in your group chat. Each friend opens Factorio, goes to Multiplayer → Connect to address, pastes it in, and joins. If the server requires a password, include that in the same message.
Practical checks before you invite
- Confirm the server is actually running and not stopped or sleeping; a stopped server won't accept connections.
- Match game versions. Factorio generally requires players to be on compatible versions, so tell friends which version your server runs.
- Decide on a password. An open server can attract strangers; a password keeps it to your group.
- Consider mods. If your server uses mods, friends need the same mod set, and Factorio usually syncs them automatically on join—but mismatches are a common failure point.
If a friend can't connect
Have them verify they typed the address exactly, check that their Factorio version matches, and confirm the server is online. Version mismatches and typos are the most frequent causes.
For the exact steps and where the address appears in your account, check the Factorio Zone site itself, since the interface details are specific to that service.
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