// modpack server guide
Monifactory server hosting & setup guide
A Monifactory server needs Java 17 and about 9–11.5 GB of RAM for up to 15 players.
A modern remake of Nomifactory on Forge 1.20.1: a quest-driven GregTech factory pack with optional Hard and Expert modes.
Pack details checked by hand against Monifactory on CurseForge on October 4, 2026.
Monifactory is a Forge modpack for Minecraft 1.20.1 with about 220 mods. We'd pick our Heavy plan (12 GB) for it.
- Monifactory is still in beta, so read the changelog and take a backup before updating a running server.
Quick facts
| Loader | Forge |
|---|---|
| Minecraft versions | 1.20.1 |
| Java needed | Java 17 for Minecraft 1.20.1 Java version chart. |
| Mods | About 220 modsCounted from the pack's manifest on GitHub, so treat it as a rough number. |
| RAM | About 7–7.5 GB for 1–3 playersBy player count. |
| Downloads | 445,434 on CurseForgeAs of October 4, 2026. |
| Latest version | August 27, 2026 (version Beta 0.13.8)The newest version when we checked on October 4, 2026. |
| Official server files | Download pageA server zip is attached to each release on GitHub, for example Monifactory-Beta.0.13.8-server.zip. |
| Where to get it | Monifactory on CurseForge |
| Tags | quests, tech |
Monifactory on a server: what to know
Monifactory is a Forge 1.20.1 GregTech CEu Modern pack, a remaster of Nomifactory CEu, and still in beta. The server zip is attached to each GitHub release rather than CurseForge (Monifactory-Beta.0.13.8-server.zip for 0.13.8) and holds the mods, configs and scripts but not Forge. The README says to install Forge 47.4.13 first, unzip the server files over it, then run it once to create eula.txt. The FAQ calls Peaceful the intended way to play and recommends at least 6 GB of RAM for servers.
Hard and Expert modes are switched on a dedicated server with java -jar mods/monilabs-*.jar followed by normal, hard or expert, and every client has to be on the same mode, or joining fails with a mod mismatch.
Watch out for
- If players add the optional ProjectRed Illumination, copy its jar into the server's mods folder as well, or the server crashes. Source.
- After updating, the FAQ says to replace the contents of the world's serverconfig folder with the pack's defaultconfigs. Source.
- Lost Cities, which makes the ruins around spawn, crashes when generating a superflat world, so remove it if you want one. Source.
Sources: github.com, github.com (2), github.com (3), github.com (4), curseforge.com. Checked October 12, 2026.
Monifactory server files
Monifactory's authors publish official server files. A server zip is attached to each release on GitHub, for example Monifactory-Beta.0.13.8-server.zip. Get the official server files.
Use the server files for the exact version your players install: a server and client on different pack versions won't connect. Install the Forge 1.20.1 server version that the pack's readme names with the panel's one-click Forge installer, then upload the contents of the server zip over SFTP.
How much RAM does a Monifactory server need?
| Players online | RAM | DSN plan |
|---|---|---|
| 1–3 players | About 7–7.5 GB | Premium (8 GB) |
| 4–8 players | About 7.5–9.5 GB | Heavy (12 GB)Premium (8 GB) can do if players stay close. |
| 9–15 players | About 9–11.5 GB | Heavy (12 GB) |
Estimated from about 220 mods with our RAM calculator, not measured: low end if players stay together, high end if they spread out.
By this estimate Premium (8 GB) can run a small group. Our pick below, Heavy, leaves room for more players and for the pack growing with updates.
Set Java's heap (-Xmx) 10–15% under the RAM you have, about -Xmx10500M on 12 GB. Forge 1.20.1 reads it from user_jvm_args.txt: uncomment the -Xmx line. RAM guide.
Monifactory server requirements
| Java | Java 17 |
|---|---|
| Loader | Forge for Minecraft 1.20.1 |
| CPU | Fast single-core speed (one main thread). With 220 mods, the first start takes minutes. |
| RAM | About 7–11.5 GB for 1–15 players (table above) |
| Disk | The server files, a growing world and backups |
| Network | TCP port 25565 open to players |
Recommended plan
Our pick for Monifactory
Heavy
12 GB RAM · planned launch price $42/month
At about 220 mods this is a heavy pack, and 12 GB keeps it clear of out-of-memory crashes.
Ordering is closed until we relaunch. We aren't taking orders or payments while we move to new hardware. Join the launch list and we'll email you when Heavy servers open.
Heavy is our biggest plan. Not sure? Email hello@dsnservers.com.
Planned launch price in USD, billed monthly once ordering opens, with a 7-day refund window.
How to make a Monifactory server on your own PC
What's specific to Monifactory, step by step. The full walkthrough for any pack: how to make a modded Minecraft server.
- Install Java 17.
Check with
java -version. Java version chart. - Get the server files.
Download the official server files for the version your players use and unzip them into an empty folder. Follow the readme that comes with them.
- Start it and accept the EULA.
Run the start script in the server files, or the
run.sh/run.batthe Forge 1.20.1 installer writes, then seteula=trueineula.txtif you accept Mojang's EULA (EULA step). With about 220 mods, the first start takes minutes. - Set the RAM with
-Xmx, sized from the table above. - Let friends connect: forward TCP 25565, or use a tunnel or host behind CGNAT (can't connect?).
Or run Monifactory on DSN
Once we relaunch (join the launch list), on DSN you'd set it up by hand, with the panel doing the Java and the address: Install the Forge 1.20.1 server version that the pack's readme names with the panel's one-click Forge installer, then upload the contents of the server zip over SFTP.
How to play Monifactory with friends
Each player installs Monifactory with the CurseForge app or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of Monifactory on the server and a client show up as Mismatched mod channel list or mod rejections. Why friends can't join, timeouts included.
Lag and performance on Monifactory
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once Monifactory has enough (tick lag guide). For Monifactory:
- Measure first: spark's
/spark tpsand profiler work on 1.20.1 and name the mod or machine using the tick time. - Distances:
view-distance=8and a lowersimulation-distanceinserver.properties. - Pre-generate: Chunky for 1.20.1,
/chunky radius 3000then/chunky start, before people explore. - Chunk loaders keep machines running with nobody nearby; in a pack this size, dozens add up.
Common Monifactory crashes
What a Forge 1.20.1 server running Monifactory hits most. For any other error, paste the log into the free crash log analyzer.
- Out of memory. Monifactory (about 220 mods) needs about 7–7.5 GB for 1–3 players;
java.lang.OutOfMemoryErrormeans it ran out. Out-of-memory fix. - Wrong Java version. Monifactory on Minecraft 1.20.1 needs Java 17. Started on Java 8, it stops with
UnsupportedClassVersionError: ... class file version 61.0, this version of the Java Runtime only recognizes class file versions up to 52.0. Java version fix. - Client-only mod on the server. This one shows up when the mods folder is copied from a player's game instead of installed as a server. Check a mods list with the client-or-server-side checker. Client-only mod fix.
- After adding or updating a mod. Mods you add to Monifactory by hand usually crash it with a missing dependency or a mixin conflict.
- Ticking entity or block entity. The crash report names it and gives its coordinates. Ticking entity fix.
Updates and support
Before moving Monifactory past version Beta 0.13.8, back up the world: see updating a modpack server without losing your world.
Bugs in Monifactory itself go to its authors: issue tracker. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like Monifactory
More: all modpack guides and how to make a modded server.
Run Monifactory on DSN when we relaunch.
Our pick, Heavy: 12 GB, planned at $42/month.
DSN Servers isn't affiliated with Monifactory or CurseForge. We wrote the summary and checked the pack's facts by hand on October 4, 2026. Sources: curseforge.com, curseforge.com (2), api.cfwidget.com, github.com, github.com (2).