// modpack server guide
Alaskan Wilderness server hosting & setup guide
An Alaskan Wilderness server needs Java 17 and about 3–3.5 GB of RAM for up to 3 players.
You are on an expedition, but your place to stay has seemingly been abandoned. Having it falling apart, can you survive the Alaskan wilderness? Gathering supplies, keeping yourself warm and not becoming a bears next meal.
Summary from Alaskan Wilderness on Modrinth.
Alaskan Wilderness is a Forge modpack for Minecraft 1.20.1 with 75 mods. We'd pick our Standard plan (4 GB) for it.
Quick facts
| Loader | Forge |
|---|---|
| Minecraft versions | 1.20.1 |
| Java needed | Java 17 for Minecraft 1.20.1 Java version chart. |
| Mods | 75 modsCounted from the pack's file list on Modrinth. None are marked client-only. |
| RAM | About 3–3.5 GB for 1–3 playersBy player count. |
| Downloads | 336,629 on Modrinth |
| Last updated | April 29, 2025 (version 1.0.0) |
| First published | March 29, 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, challenging, combat |
Alaskan Wilderness server files
No. Alaskan Wilderness has no separate server pack on Modrinth, so the server is built from the .mrpack: the Forge 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 an Alaskan Wilderness 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 75 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 1.20.1 reads it from user_jvm_args.txt: uncomment the -Xmx line. RAM guide.
Alaskan Wilderness server requirements
| Java | Java 17 |
|---|---|
| Loader | Forge 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 Alaskan Wilderness
Standard
4 GB RAM · planned launch price $16/month
At about 75 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 an Alaskan Wilderness server on your own PC
What's specific to Alaskan Wilderness, 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 1.20.1 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 Alaskan Wilderness on DSN
Once we relaunch (join the launch list), on DSN you'd install Alaskan Wilderness from the panel's Modrinth modpack installer (version 1.0.0), pick Java 17 on the Startup tab and accept the EULA in the console. No port forwarding.
How to play Alaskan Wilderness with friends
Each player installs Alaskan Wilderness version 1.0.0 with the Modrinth App or Prism Launcher, the same version as the server, and adds the server's address under Multiplayer.
Different versions of Alaskan Wilderness 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 Alaskan Wilderness
Can't keep up! Is the server overloaded? means ticks take longer than 50 ms; more RAM won't fix that once Alaskan Wilderness has enough (tick lag guide). For Alaskan Wilderness:
- 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 Alaskan Wilderness crashes
What a Forge 1.20.1 server running Alaskan Wilderness hits most. For any other error, paste the log into the free crash log analyzer.
- Wrong Java version. Alaskan Wilderness 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. Alaskan Wilderness (75 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 Alaskan Wilderness 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 Alaskan Wilderness 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 Alaskan Wilderness past version 1.0.0, back up the world: see updating a modpack server without losing your world.
Bugs in Alaskan Wilderness itself go to its authors: Discord. Server problems on DSN: hello@dsnservers.com or Discord.
Packs like Alaskan Wilderness
More: all modpack guides and how to make a modded server.
Run Alaskan Wilderness on DSN when we relaunch.
Our pick, Standard: 4 GB, planned at $16/month.
DSN Servers isn't affiliated with Alaskan Wilderness or Modrinth. The pack's name, icon, summary and stats come from Modrinth's public API (checked October 4, 2026).