Set up a JurassiCraft 3 modpack server

JurassiCraft 3 is a Minecraft 1.12.2 Forge modpack built around the JurassiCraft dinosaur mod. Its CurseForge page describes an adventure pack where you relive the Jurassic Park films and work towards building your own dinosaur park, with technology and exploration mods around it. This guide installs the pack on your server from the Modpacks tab. If you only want the single mod on a server, read Set up a JurassiCraft server instead.

Checked against JurassiCraft 3 version 0.1 on Forge 14.23.5.2855 (Minecraft 1.12.2), October 2026.

What it needs

• Forge for Minecraft 1.12.2. The pack's manifest names Forge 14.23.5.2855 and lists 51 mod files. The panel runs 1.12.2 on Java 8 by itself, so you do not pick a Java version.
• RAM. The pack page recommends giving the pack at least 4 GB of RAM. That advice is written for the player's own computer and gives no server figure, so use it as a starting point and watch the RAM card on the Console tab. Minecraft hosting lists the plans.
• The same pack on every player's computer. Players install JurassiCraft 3 from CurseForge.

Install it on your server

Installing a modpack reinstalls the whole server, so use a new server or one you can wipe.

1. Open Backups and press Create backup if the server holds anything you want to keep.
2. Open Modpacks, under Content in the left rail. Above the search box, choose the CurseForge chip.
3. Search for JurassiCraft 3 and find the row called JurassiCraft 3 with the 1.12.2 and Forge badges.
4. Press Install. The window that opens names the loader and Minecraft version it will use.
5. Leave Take a backup first ticked. Tick Start the server when it's ready if you want it to boot by itself, and tick I agree to the Minecraft EULA if that box appears.
6. Press and hold Hold to Install and reinstall for about three seconds, until it fills, then watch the Console tab until the install finishes.

This pack has no server pack on CurseForge, so the panel installs the player download and fetches the mods its manifest names, leaving out resource packs, shaders and mods Modrinth lists as client-only. The pack's configuration files are copied to the server's root.

First start

Press Start on the Console tab and accept the Minecraft EULA if the panel asks. When the console prints a line containing For help, type, the server is up. Share the address shown under Server address in the left rail (Connect to your server for the first time). To use commands, make yourself an operator in the Players tab (Whitelist players and set operators).

The pack ships config/jurassicraft.cfg with the line B:"Dinosaur Spawning"=false. Open the file in File Manager and change it to B:"Dinosaur Spawning"=true to switch that setting on, then restart. In the same file, fossil and amber generation are on.

Common problems

• The server stops while loading. Read the log in the Console tab. A mod that the install window listed and you skipped is the first thing to rule out.
• The server stops with an out-of-memory error. Use Change plan in the Settings tab.