// modpack server guide
SkyBlock Plus server hosting & setup guide
A SkyBlock Plus server needs Java 25 and about 2–3.5 GB of RAM for up to 15 players.
Server-side modpack for skyblock with some vanilla+ features
Summary from SkyBlock Plus on Modrinth.
SkyBlock Plus is a Fabric modpack for Minecraft 26.2 (older versions go back to 1.21) with 6 mods. We'd pick our Standard plan (4 GB) for it.
Quick facts
| Loader | Fabric |
|---|---|
| Minecraft versions | 26.2, 26.1, 1.21.11, 1.21.10, 1.21.8and 6 older (back to 1.21)1.21.7, 1.21.6, 1.21.5, 1.21.4, 1.21.1, 1.21 |
| Java needed | Java 25 for Minecraft 26.2Older pack versions: Java 21 for 1.21.11, 1.21.10, 1.21.8 and older. Java version chart. |
| Mods | 6 modsCounted from the pack's file list on Modrinth. None are marked client-only. |
| RAM | About 2 GB for 1–3 playersBy player count. |
| Downloads | 536,436 on Modrinth |
| Last updated | September 13, 2026 (version 1.0.9) |
| First published | October 2, 2024 on Modrinth |
| Server support | Server only: the pack runs on the server, and players join without installing it. |
| Server pack | Not needed: the pack runs on the server only. |
| Modrinth tags | adventure, challenging |
SkyBlock Plus server files
SkyBlock Plus is a server-side pack: Modrinth marks it unsupported on the client, so the pack itself is the server's mod set and players join without it. Install it on the server from the .mrpack on Modrinth: the Fabric server for Minecraft 26.2, plus everything in its overrides folder and the mods listed in modrinth.index.json.
How much RAM does a SkyBlock Plus server need?
| Players online | RAM | DSN plan |
|---|---|---|
| 1–3 players | About 2 GB | Standard (4 GB) |
| 4–8 players | About 2–2.5 GB | Standard (4 GB) |
| 9–15 players | About 2–3.5 GB | Standard (4 GB) |
Estimated from 6 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. Fabric 26.2 takes it in the java command (-Xmx), usually in the start script. RAM guide.
SkyBlock Plus server requirements
| Java | Java 25 |
|---|---|
| Loader | Fabric for Minecraft 26.2 |
| CPU | Fast single-core speed (one main thread). |
| RAM | About 2–3.5 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 SkyBlock Plus
Standard
4 GB RAM · planned launch price $16/month
At about 6 Fabric 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 15 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 SkyBlock Plus server on your own PC
What's specific to SkyBlock Plus, step by step. The full walkthrough for any pack: how to make a modded Minecraft server.
- Install Java 25.
Check with
java -version. Java version chart. - Get the server files.
Install the Fabric server for Minecraft 26.2, then add the .mrpack's
overridesfolder and the mods itsmodrinth.index.jsonlists. Players don't install anything. - Start it and accept the EULA.
Run the start script in the server files, or
java -jaron the Fabric 26.2 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 SkyBlock Plus on DSN
Once we relaunch (join the launch list), on DSN you'd install SkyBlock Plus from the panel's Modrinth modpack installer (version 1.0.9), pick Java 25 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play SkyBlock Plus with friends
SkyBlock Plus is a server-side pack (Modrinth marks it unsupported on the client), so players join with an unmodded Minecraft 26.2 Java Edition client and don't install anything.
Why friends can't join, timeouts included.
Lag and performance on SkyBlock Plus
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once SkyBlock Plus has enough (tick lag guide). For SkyBlock Plus:
- Measure first: spark's
/spark tpsand profiler work on 26.2 and name the mod or machine using the tick time. - Distances:
view-distance=8and a lowersimulation-distanceinserver.properties. - Pre-generate: Chunky for 26.2,
/chunky radius 3000then/chunky start, before people explore.
Common SkyBlock Plus crashes
What a Fabric 26.2 server running SkyBlock Plus hits most. For any other error, paste the log into the free crash log analyzer.
- Wrong Java version. SkyBlock Plus on Minecraft 26.2 needs Java 25. Started on Java 21, it stops with
UnsupportedClassVersionError: ... class file version 69.0, this version of the Java Runtime only recognizes class file versions up to 65.0. Java version fix. - Out of memory. SkyBlock Plus (6 mods on the server) needs about 2 GB for 1–3 players;
java.lang.OutOfMemoryErrormeans it ran out. Out-of-memory fix. - Client-only mod on the server. The SkyBlock Plus 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 SkyBlock Plus 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 SkyBlock Plus past version 1.0.9, back up the world: see updating a modpack server without losing your world.
Bugs in SkyBlock Plus itself go to its authors: issue tracker, wiki and Discord. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like SkyBlock Plus
More: all modpack guides and how to make a modded server.
Run SkyBlock Plus on DSN when we relaunch.
Our pick, Standard: 4 GB, planned at $16/month.
DSN Servers isn't affiliated with SkyBlock Plus or Modrinth. The pack's name, icon, summary and stats come from Modrinth's public API (checked October 4, 2026).