// modpack server guide
The Minehattan Project server hosting & setup guide
A server for The Minehattan Project needs Java 17 and about 3–3.5 GB of RAM for up to 3 players.
Plutonium, pulverisers, and pointed sticks: war never changes.
Summary from The Minehattan Project on Modrinth.
The Minehattan Project is a Forge modpack for Minecraft 1.19.2 (older versions go back to 1.5.2) with 77 mods, 76 of which run on the server. We'd pick our Standard plan (4 GB) for it.
Quick facts
| Loader | Forge |
|---|---|
| Minecraft versions | 1.19.2, 1.6.4, 1.5.2 |
| Java needed | Java 17 for Minecraft 1.19.2Older pack versions: Java 8 for 1.6.4, 1.5.2. Java version chart. |
| Mods | 76 run on the server77 in the pack. The other one is client-only, and the server skips it. |
| RAM | About 3–3.5 GB for 1–3 playersBy player count. |
| Downloads | 138,377 on Modrinth |
| Last updated | July 26, 2024 (version 5.0.6) |
| First published | April 18, 2023 on Modrinth |
| Server support | Required: the pack has mods that must run on the server. |
| Server pack | Not published separatelyHow to build the server. |
| Modrinth tags | combat, technology, challenging |
The Minehattan Project server files
No. The Minehattan Project has no separate server pack on Modrinth, so the server is built from the .mrpack: the Forge server for Minecraft 1.19.2, plus the pack's overrides folder and the server-side mods its modrinth.index.json lists. A modpack installer does this for you; our guide shows how to make a server for a modpack with no server pack.
How much RAM does a server for The Minehattan Project need?
| Players online | RAM | DSN plan |
|---|---|---|
| 1–3 players | About 3–3.5 GB | Standard (4 GB) |
| 4–8 players | About 3.5–4.5 GB | Premium (8 GB)Standard (4 GB) can do if players stay close. |
| 9–15 players | About 4–6 GB | Premium (8 GB)Standard (4 GB) can do if players stay close. |
Estimated from 76 mods on the server with our RAM calculator, not measured: low end if players stay together, high end if they spread out.
Set Java's heap (-Xmx) 10–15% under the RAM you have, about -Xmx3500M on 4 GB. Forge 1.19.2 reads it from user_jvm_args.txt: uncomment the -Xmx line. RAM guide.
The Minehattan Project server requirements
| Java | Java 17 |
|---|---|
| Loader | Forge for Minecraft 1.19.2 |
| CPU | Fast single-core speed (one main thread). |
| RAM | About 3–6 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 The Minehattan Project
Standard
4 GB RAM · planned launch price $16/month
At about 76 Forge mods this is a light pack, so 4 GB of RAM covers it for a small group.
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 Standard servers open.
More than 3 players, or lots exploring at once? Go up to Premium (8 GB). 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 server for The Minehattan Project on your own PC
What's specific to The Minehattan Project, 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.
Build them from the .mrpack, as in server files above.
- Start it and accept the EULA.
Run the start script in the server files, or the
run.sh/run.batthe Forge 1.19.2 installer writes, then seteula=trueineula.txtif you accept Mojang's EULA (EULA step). - 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 The Minehattan Project on DSN
Once we relaunch (join the launch list), on DSN you'd install The Minehattan Project from the panel's Modrinth modpack installer (version 5.0.6), pick Java 17 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play The Minehattan Project with friends
Each player installs The Minehattan Project version 5.0.6 with the Modrinth App or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of The Minehattan Project 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 The Minehattan Project
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once The Minehattan Project has enough (tick lag guide). For The Minehattan Project:
- Measure first: spark's
/spark tpsand profiler work on 1.19.2 and name the mod or machine using the tick time. - Distances:
view-distance=8and a lowersimulation-distanceinserver.properties. - Pre-generate: Chunky for 1.19.2,
/chunky radius 3000then/chunky start, before people explore.
Common crashes on The Minehattan Project
What a Forge 1.19.2 server running The Minehattan Project hits most. For any other error, paste the log into the free crash log analyzer.
- Wrong Java version. The Minehattan Project on Minecraft 1.19.2 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. - Out of memory. The Minehattan Project (76 mods on the server) needs about 3–3.5 GB for 1–3 players;
java.lang.OutOfMemoryErrormeans it ran out. Out-of-memory fix. - Client-only mod on the server. The Minehattan Project includes 1 client-only mod, which a server install skips; copying a player's mods folder brings it back and stops the 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 The Minehattan Project 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 The Minehattan Project past version 5.0.6, back up the world: see updating a modpack server without losing your world.
Bugs in The Minehattan Project itself go to its authors: issue tracker. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like The Minehattan Project
More: all modpack guides and how to make a modded server.
Run The Minehattan Project on DSN when we relaunch.
Our pick, Standard: 4 GB, planned at $16/month.
DSN Servers isn't affiliated with The Minehattan Project or Modrinth. The pack's name, icon, summary and stats come from Modrinth's public API (checked October 4, 2026).