// modpack server guide
Cobbleverse server hosting & setup guide
A Cobbleverse server needs Java 21 and about 5.5–7.5 GB of RAM for up to 15 players.
Start a true Pokémon adventure in Minecraft: Cobblemon 1.7.3 | ALL 1025 Pokémon! | Mega Evolutions | Gyms & Badges | Starter Kit | Unique Structures | Custom Music | Shaders | Optimized | So much more! [1.21.1]
Summary from Cobbleverse on Modrinth.
Cobbleverse is a Fabric modpack for Minecraft 1.21.1 with 136 mods. We'd pick our Premium plan (8 GB) for it.
Quick facts
| Loader | Fabric |
|---|---|
| Minecraft versions | 1.21.1 |
| Java needed | Java 21 for Minecraft 1.21.1 Java version chart. |
| Mods | 136 modsCounted from the pack's file list on Modrinth. None are marked client-only. |
| RAM | About 4–4.5 GB for 1–3 playersBy player count. |
| Downloads | 6,935,477 on Modrinth |
| Last updated | July 21, 2026 (version 1.7.42) |
| First published | January 15, 2025 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, optimization, challenging, lightweight |
Cobbleverse on a server: what to know
COBBLEVERSE is a Fabric 1.21.1 Pokémon adventure built on Cobblemon 1.7.3, with gyms, Elite Four and champions for Kanto, Johto, Hoenn and Sinnoh. Much of its content is datapacks in a datapacks folder at the root of the instance, loaded by the Global Packs mod when a world is generated, so put that folder on the server next to mods and config before the first start. Lumy's guide says the datapacks must load on the server and its config folder must match the launcher's, or the region setup won't work.
Hunger and mobs are off by default, through the COBBLEVERSE - No Hunger datapack and the MobsBeGone mod; remove them from the server to bring survival back. Legendary structures unlock as players beat each region's champion, and an op can unlock them early with /function setup:<region>, in the order Johto, Hoenn, Sinnoh, then restart.
Watch out for
- To update, Lumy's guide says to replace the COBBLEVERSE files in config, mods and datapacks with the new client files, replacing only what the server already has. Source.
Sources: modrinth.com, modrinth.com (2), modrinth.com (3), lumyverse.com, lumyverse.com (2), lumyverse.com (3). Checked October 12, 2026.
Cobbleverse server files
No. Cobbleverse has no separate server pack on Modrinth or CurseForge (we checked CurseForge on October 5, 2026), so the server is built from the .mrpack: the Fabric server for Minecraft 1.21.1, 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 Cobbleverse server need?
| Players online | RAM | DSN plan |
|---|---|---|
| 1–3 players | About 4–4.5 GB | Premium (8 GB)Standard (4 GB) can do if players stay close. |
| 4–8 players | About 4.5–6 GB | Premium (8 GB) |
| 9–15 players | About 5.5–7.5 GB | Premium (8 GB) |
Estimated from 136 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 -Xmx7000M on 8 GB. Fabric 1.21.1 takes it in the java command (-Xmx), usually in the start script. RAM guide.
Cobbleverse server requirements
| Java | Java 21 |
|---|---|
| Loader | Fabric for Minecraft 1.21.1 |
| CPU | Fast single-core speed (one main thread). |
| RAM | About 4–7.5 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 Cobbleverse
Premium
8 GB RAM · planned launch price $30/month
At about 136 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 Cobbleverse server on your own PC
What's specific to Cobbleverse, step by step. The full walkthrough for any pack: how to make a modded Minecraft server.
- Install Java 21.
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 1.21.1 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 Cobbleverse on DSN
Once we relaunch (join the launch list), on DSN you'd install Cobbleverse from the panel's Modrinth modpack installer (version 1.7.42), pick Java 21 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play Cobbleverse with friends
Each player installs Cobbleverse version 1.7.42 with the Modrinth App or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of Cobbleverse 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 Cobbleverse
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once Cobbleverse has enough (tick lag guide). For Cobbleverse:
- Measure first: spark's
/spark tpsand profiler work on 1.21.1 and name the mod or machine using the tick time. - Distances:
view-distance=8and a lowersimulation-distanceinserver.properties. - Pre-generate: Chunky for 1.21.1,
/chunky radius 3000then/chunky start, before people explore.
Common Cobbleverse crashes
What a Fabric 1.21.1 server running Cobbleverse hits most. For any other error, paste the log into the free crash log analyzer.
- Wrong Java version. Cobbleverse on Minecraft 1.21.1 needs Java 21. Started on Java 17, it stops with
UnsupportedClassVersionError: ... class file version 65.0, this version of the Java Runtime only recognizes class file versions up to 61.0. Java version fix. - Out of memory. Cobbleverse (136 mods on the server) needs about 4–4.5 GB for 1–3 players;
java.lang.OutOfMemoryErrormeans it ran out. Out-of-memory fix. - Client-only mod on the server. The Cobbleverse pack file marks none of its mods client-only, so this usually means one was copied over from a player's mods folder. 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 Cobbleverse 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 Cobbleverse past version 1.7.42, back up the world: see updating a modpack server without losing your world.
Bugs in Cobbleverse itself go to its authors: wiki and Discord. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like Cobbleverse
More: Cobblemon server hosting, all modpack guides and how to make a modded server.
Run Cobbleverse on DSN when we relaunch.
Our pick, Premium: 8 GB, planned at $30/month.
DSN Servers isn't affiliated with Cobbleverse or Modrinth. The pack's icon, summary and stats come from Modrinth's public API (checked October 4, 2026).