FOUNDRY server hosting for your factory crew
Build your voxel factory with friends on a world that keeps running when the host logs off. FOUNDRY’s free dedicated server takes Workshop mods and shows up in the in-game server browser.
- The official FOUNDRY Dedicated Server tool
- Steam Workshop mods, with client-only mods supported
- No hard player limit; best with 2 to 4 players
- Legacy branches for saves from earlier updates
- PlayersThe developers designed multiplayer for 2 to 4 players but enforce no cap.
- No hard limit; best with 2–4
- Joining
- In-game server browser or LAN
- Server software
- FOUNDRY: Dedicated Server (app 2915550)
- Mods
- Steam Workshop
- Version
- Early Access, Update 4 (April 2026)
- Server platform
- Windows 64-bit
Options
- Steam Workshop
- Server browser
- LAN
- Legacy branches
- Pauses when empty
Game facts from the FOUNDRY FAQ, the developers’ Steam update notes and SteamCMD app data, checked in October 2026.
- DDoS protection
- 20 game server locations
FOUNDRY plans are being prepared
Tell us your crew size, the update you play and your mods, and our team will reply with the options. Or open a ticket and we will let you know when the plans are online.
How much RAM does a FOUNDRY server need?
Factory size decides the load more than the crew. Update 4 reduced the dedicated server’s memory use, but large factories still need headroom.
Find your size
| Feature |
Pair
Up to 2 players
|
Recommended Crew
Up to 4 players
|
Large crew
More than 4 players or a big factory
|
|---|---|---|---|
| Memory (RAM)Working memory for the world, the players and every mod. Leave headroom: memory use grows as players explore. | 4 GB | 6 GB | 8 GB+ |
| CPU coresFactory games update every machine on one main thread, so fast cores matter more than many cores. | 2 | 2–3 | 4 |
| Disk spaceThe server files are about 2.5 GB; keep room for saves, mods and updates. | 15 GB | 20 GB | 25 GB |
| Factory sizeMachines, conveyors and trains keep working while players are online and add work for the server. | Early game | Mid game | Late game and space |
| Typical use | Two friends starting out | A crew of four | Big factories or Workshop mods |
-
Pair
Up to 2 players
- Memory (RAM)Working memory for the world, the players and every mod. Leave headroom: memory use grows as players explore.
- 4 GB
- CPU coresFactory games update every machine on one main thread, so fast cores matter more than many cores.
- 2
- Disk spaceThe server files are about 2.5 GB; keep room for saves, mods and updates.
- 15 GB
- Factory sizeMachines, conveyors and trains keep working while players are online and add work for the server.
- Early game
- Typical use
- Two friends starting out
-
Recommended
Crew
Up to 4 players
- Memory (RAM)Working memory for the world, the players and every mod. Leave headroom: memory use grows as players explore.
- 6 GB
- CPU coresFactory games update every machine on one main thread, so fast cores matter more than many cores.
- 2–3
- Disk spaceThe server files are about 2.5 GB; keep room for saves, mods and updates.
- 20 GB
- Factory sizeMachines, conveyors and trains keep working while players are online and add work for the server.
- Mid game
- Typical use
- A crew of four
-
Large crew
More than 4 players or a big factory
- Memory (RAM)Working memory for the world, the players and every mod. Leave headroom: memory use grows as players explore.
- 8 GB+
- CPU coresFactory games update every machine on one main thread, so fast cores matter more than many cores.
- 4
- Disk spaceThe server files are about 2.5 GB; keep room for saves, mods and updates.
- 25 GB
- Factory sizeMachines, conveyors and trains keep working while players are online and add work for the server.
- Late game and space
- Typical use
- Big factories or Workshop mods
The developers publish no server hardware figures; these starting points are conservative and grow with your factory.
Server tool, mods and updates
FOUNDRY is in Early Access and updates regularly; the dedicated server follows every update.
Official server tool
FOUNDRY: Dedicated Server is a free Steam tool for 64-bit Windows with its own launcher.
Steam Workshop
Since Update 1, mods come from the Steam Workshop; mods can depend on each other and some are client-only.
Mod check
The game warns players when their mods do not match the server or save they join.
Server browser
Players find dedicated servers in the in-game server browser, or play over LAN.
Pauses when empty
A dedicated server pauses while nobody is connected, so the factory waits for your crew.
Legacy branches
Branches for Update 1, 2.2 and 3.0 let a server stay on an older update until your crew moves on.
Set up your FOUNDRY server
Four steps to a factory that never closes.
-
Pick a size
Choose with the table above; plan for the factory you will have, not the one you start with.
-
Pick a location
Choose the one closest to your crew from our 20 game server locations.
-
Add your world and mods
Start a new world or bring your save, and use the same Workshop mods as your crew.
-
Join from the browser
Players open the server browser in FOUNDRY and join your server.
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Frequently asked questions
Does FOUNDRY have a dedicated server?
Yes. FOUNDRY: Dedicated Server is a free tool on Steam for 64-bit Windows, updated with every major update; Update 4 in April 2026 reduced its memory use.
How many players can join?
There is no hard limit. The developers designed multiplayer for 2 to 4 players on one server, and larger groups are possible.
How do players join the server?
Through the in-game server browser, added in Update 1, or over LAN.
Can I use mods?
Yes. FOUNDRY supports the Steam Workshop. Mods can declare dependencies and some are client-only; the game warns players if their mods do not match the server.
Does the server keep running when nobody is online?
The server stays online, but the game pauses while nobody is connected, so nothing happens in your factory until someone joins.
Can I stay on an older update?
Yes. The server tool has legacy branches for Update 1, Update 2.2 and Update 3.0. Everyone must use the same version as the server.
Does the server need a graphics card?
No. A June 2025 hotfix fixed an error on dedicated servers running without a GPU, so the server runs on machines without one.
Is FOUNDRY finished?
No. FOUNDRY has been in Early Access since May 2024, with Update 4 Rails & Reactors in April 2026 and regular developer blogs since then. Keep the server on the same version as your crew.
Ready to automate together?
Tell us your crew size and mods, and we will help you pick the right FOUNDRY server.