// modpack server guide
Pokemon Elysium server hosting & setup guide
A Pokemon Elysium server needs Java 17 and about 4–6 GB of RAM for up to 15 players.
Modpack originally made for the Pokemon Elysium server, a Cobblemon-focused pack with hints of low-tech steampunk.
Summary from Pokemon Elysium on Modrinth.
Pokemon Elysium is a Fabric modpack for Minecraft 1.20.1 (older versions go back to 1.19.2) with 171 mods, 90 of which run on the server. We'd pick our Premium plan (8 GB) for it.
Quick facts
| Loader | Fabric |
|---|---|
| Minecraft versions | 1.20.1, 1.19.2 |
| Java needed | Java 17 for Minecraft 1.20.1 Java version chart. |
| Mods | 90 run on the server171 in the pack. The other 81 are client-only, and the server skips them. |
| RAM | About 3–3.5 GB for 1–3 playersBy player count. |
| Downloads | 1,266,803 on Modrinth |
| Last updated | January 17, 2024 (version 1.2.1) |
| First published | May 7, 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 | adventure, combat, kitchen-sink, lightweight |
Pokemon Elysium server files
No. Pokemon Elysium has no separate server pack on Modrinth, so the server is built from the .mrpack: the Fabric server for Minecraft 1.20.1, 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 Pokemon Elysium server 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 90 mods on the server with our RAM calculator, not measured: low end if players stay together, high end if they spread out.
By this estimate Standard (4 GB) can run a small group. Our pick below, Premium, 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 -Xmx7000M on 8 GB. Fabric 1.20.1 takes it in the java command (-Xmx), usually in the start script. RAM guide.
Pokemon Elysium server requirements
| Java | Java 17 |
|---|---|
| Loader | Fabric for Minecraft 1.20.1 |
| 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 Pokemon Elysium
Premium
8 GB RAM · planned launch price $30/month
At about 90 Fabric mods this is a mid-size pack, and 8 GB gives it room for the mods plus the chunks your players load.
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 Premium servers open.
More than 15 players, or lots exploring at once? Go up to Heavy (12 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 Pokemon Elysium server on your own PC
What's specific to Pokemon Elysium, 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
java -jaron the Fabric 1.20.1 server launcher, 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 Pokemon Elysium on DSN
Once we relaunch (join the launch list), on DSN you'd install Pokemon Elysium from the panel's Modrinth modpack installer (version 1.2.1), pick Java 17 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play Pokemon Elysium with friends
Each player installs Pokemon Elysium version 1.2.1 with the Modrinth App or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of Pokemon Elysium 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 Pokemon Elysium
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once Pokemon Elysium has enough (tick lag guide). For Pokemon Elysium:
- 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.
Common Pokemon Elysium crashes
What a Fabric 1.20.1 server running Pokemon Elysium hits most. For any other error, paste the log into the free crash log analyzer.
- Wrong Java version. Pokemon Elysium 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. - Out of memory. Pokemon Elysium (90 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. Pokemon Elysium includes 81 client-only mods, which a server install skips; copying a player's mods folder brings them 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 Pokemon Elysium 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 Pokemon Elysium past version 1.2.1, back up the world: see updating a modpack server without losing your world.
Bugs in Pokemon Elysium itself go to its authors through its Modrinth page. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like Pokemon Elysium
More: Cobblemon server hosting, all modpack guides and how to make a modded server.
Run Pokemon Elysium on DSN when we relaunch.
Our pick, Premium: 8 GB, planned at $30/month.
DSN Servers isn't affiliated with Pokemon Elysium or Modrinth. The pack's name, icon, summary and stats come from Modrinth's public API (checked October 4, 2026).