// modpack server guide
Better Adventures++ (1.21.11) server hosting & setup guide
A Better Adventures++ (1.21.11) server needs Java 21 and about 5.5–8 GB of RAM for up to 15 players.
A modified version of Flowstate's Better Adventures+ modpack that adds a few mods I feel keep the spirit of the original, while adding extra content, features, and structures
Summary from Better Adventures++ (1.21.11) on Modrinth.
Better Adventures++ (1.21.11) is a Fabric and Quilt modpack for Minecraft 1.21.11 (older versions go back to 1.19.2) with 150 mods, 141 of which run on the server. We'd pick our Premium plan (8 GB) for it.
Quick facts
| Loader | Fabric and Quilt |
|---|---|
| Minecraft versions | 1.21.11, 1.21.1, 1.20.1, 1.19.2 |
| Java needed | Java 21 for Minecraft 1.21.11Older pack versions: Java 17 for 1.20.1, 1.19.2. Java version chart. |
| Mods | 141 run on the server150 in the pack. The other 9 are client-only, and the server skips them. |
| RAM | About 4–5 GB for 1–3 playersBy player count. |
| Downloads | 261,384 on Modrinth |
| Last updated | May 19, 2026 (version 1.3.0) |
| First published | June 24, 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 |
Better Adventures++ (1.21.11) server files
No. Better Adventures++ (1.21.11) has no separate server pack on Modrinth, so the server is built from the .mrpack: the Fabric or Quilt server for Minecraft 1.21.11, 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 Better Adventures++ (1.21.11) server need?
| Players online | RAM | DSN plan |
|---|---|---|
| 1–3 players | About 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 5.5–8 GB | Premium (8 GB) |
Estimated from 141 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 or Quilt 1.21.11 takes it in the java command (-Xmx), usually in the start script. RAM guide.
Better Adventures++ (1.21.11) server requirements
| Java | Java 21 |
|---|---|
| Loader | Fabric or Quilt for Minecraft 1.21.11 |
| CPU | Fast single-core speed (one main thread). |
| RAM | About 4–8 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 Better Adventures++ (1.21.11)
Premium
8 GB RAM · planned launch price $30/month
At about 141 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 Better Adventures++ (1.21.11) server on your own PC
What's specific to Better Adventures++ (1.21.11), 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 or Quilt 1.21.11 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 Better Adventures++ (1.21.11) on DSN
Once we relaunch (join the launch list), on DSN you'd install Better Adventures++ (1.21.11) from the panel's Modrinth modpack installer (version 1.3.0), pick Java 21 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play Better Adventures++ (1.21.11) with friends
Each player installs Better Adventures++ (1.21.11) version 1.3.0 with the Modrinth App or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of Better Adventures++ (1.21.11) 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 Better Adventures++ (1.21.11)
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once Better Adventures++ (1.21.11) has enough (tick lag guide). For Better Adventures++ (1.21.11):
- Measure first: spark's
/spark tpsand profiler work on 1.21.11 and name the mod or machine using the tick time. - Distances:
view-distance=8and a lowersimulation-distanceinserver.properties. - Pre-generate: Chunky for 1.21.11,
/chunky radius 3000then/chunky start, before people explore.
Common Better Adventures++ (1.21.11) crashes
What a Fabric and Quilt 1.21.11 server running Better Adventures++ (1.21.11) hits most. For any other error, paste the log into the free crash log analyzer.
- Wrong Java version. Better Adventures++ (1.21.11) on Minecraft 1.21.11 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. Better Adventures++ (1.21.11) (141 mods on the server) needs about 4–5 GB for 1–3 players;
java.lang.OutOfMemoryErrormeans it ran out. Out-of-memory fix. - Client-only mod on the server. Better Adventures++ (1.21.11) includes 9 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 Better Adventures++ (1.21.11) 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 Better Adventures++ (1.21.11) past version 1.3.0, back up the world: see updating a modpack server without losing your world.
Bugs in Better Adventures++ (1.21.11) itself go to its authors: Discord. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like Better Adventures++ (1.21.11)
More: all modpack guides and how to make a modded server.
Run Better Adventures++ (1.21.11) on DSN when we relaunch.
Our pick, Premium: 8 GB, planned at $30/month.
DSN Servers isn't affiliated with Better Adventures++ (1.21.11) or Modrinth. The pack's name, icon, summary and stats come from Modrinth's public API (checked October 4, 2026).