Set up the Fantasy MC modpack server

Fantasy MC is a Fabric modpack for Minecraft 1.21.1 by Pixel Dream Studios. Its CurseForge page says the aim is to add a lot of fantasy-themed content while keeping the vanilla feel, with performance mods and matched configs. The pack's wiki lists a starter guide, a boss guide, weapons and artifacts. You install the server from the Modpacks tab, using the pack's own server files from CurseForge.

Checked against Fantasy MC [1.21.1] 0.3.3 (the CurseForge file dated 20 July 2026) and its server pack, on Fabric 0.19.3 and Minecraft 1.21.1, October 2026.

What the pack needs

• Minecraft 1.21.1 with Fabric 0.19.3. The server pack's variables.txt names both. The panel switches Java for you, which is Java 21 for this version.
• Memory. The CurseForge page and the pack's wiki give no figure. The server pack's variables.txt sets a 4 GB heap for the pack's own start scripts, but the panel does not use that file and sizes the heap from your plan's RAM at every start. Read how much RAM a Minecraft server needs and check the Minecraft plans before you install.
• Disk space. This is a large server pack. It is a download of about 1.3 GB and unpacks to about 1.4 GB. Both sit on your plan's disk while it unpacks, so allow about 2.8 GB free. The download is deleted afterwards, and your world grows on top. The Disk Analyser tab shows what is using space.
• The same pack version for players. The file names carry a BETA tag, and the pack's wiki says players need the exact same modpack version as the server. This guide installs 0.3.3, so players should run 0.3.3 from the CurseForge app.

Install the server files

1. Open your server and choose Modpacks under Content in the left rail.
2. Above the search box, press the CurseForge chip, then search for Fantasy MC Fabric. A search for just "Fantasy MC" returns many other fantasy packs.
3. Press Install on Fantasy MC Fabric. The popup says it reinstalls your server with the pack and names Fabric and Minecraft 1.21.1.
4. If the popup offers a version dropdown, leave it on Newest that fits your server.
5. Leave Take a backup first ticked. Your current world is replaced by the pack's. Tick Start the server when it's ready if you want it to start itself, and tick I agree to the Minecraft EULA if the popup shows it.
6. Hold Install and reinstall until it fills, then wait for the install to finish.

The CurseForge file you are installing is the dedicated server pack, so no mods are fetched one by one. The pack ships no Fabric files of its own, so the install reads variables.txt and sets Fabric up itself.

First start

Press Start on the Console tab. If the EULA has not been accepted yet, the panel asks you to accept it first. The server is up when the console prints a line containing For help, type. Your address is in the left rail under Server address. Connect to your server for the first time covers adding it in Minecraft.

Settings the pack sets

The pack ships its own server.properties, and the install keeps it. Open the Config Editor to change these:

• max-players=10 is Player slots under Players. Raise it for a bigger group, then restart.
• allow-flight=true is Allow flight under Gameplay, so flying mods do not get players kicked.
• view-distance=10 is View distance (chunks) under Performance. The pack's wiki suggests keeping it between 8 and 12 chunks.
• motd is Server list message under World, and it starts as "A Fantasy MC Server".

Common problems

• A player cannot join or crashes on joining. Check they run Fantasy MC 0.3.3 on Minecraft 1.21.1 with Fabric. For players who cannot join, the pack's wiki says to make sure everyone has the exact same pack version.
• The install stops while unpacking. The install message says your plan's disk may be too small for the pack. Free space in File Manager, or check plans.
• The server lags. Watch the RAM card on the Console tab and the TPS reading in the left rail. Why is my server lagging has more.
• The server crashes at boot. Find and read a crash report shows how to name the mod at fault. The pack's issues link on CurseForge goes to the Pixel Dream Studios Discord.