
Neodymium
A large Fantasy Adventure modpack with a focus on freedom.
Screenshots






About this Modpack
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A large Fantasy Adventure modpack with a focus on freedom.
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- Beautiful mountain ranges spanning thousands of blocks via Tectonic
- Over 450 biomes and nearly 300 structures, featuring classics such as Biomes O' Plenty
- Hundreds of Advancements to complete, mobs to slay and things to find
- Over 600 features spread across the beautiful world
- And more than 300 mods! Theres almost endless possiblities. Forge your own destiny unlimited by campaigns and quests!
Want a server?
If you encounter issues, or want to request a feature, see our issue tracker

Credits & Attributions
- omoso, Lead Developer
- serpo, Author
- CasuallyJack, Playtester
Neodymium runs some of the Simply Optimized configuration files for 2.5.1+
Things to note!
This modpack ever so often usually undergoes some large breaking change. Which may break your world. Always backup your worlds before updating.- Any major "season" of Neodymium is not compatible with one another. 1.x.x worlds will not work on 2.x.x and 2.x.x wont work on 3.x.x versions.
Like this project? Check out my other projects here!
Available Versions
How to Set Up a Neodymium Server
Order Server
Choose at least 6 GB RAM (8 GB recommended for Neodymium). Based on player count: per 5 players.
Install Modpack in Dashboard
Open the modpack browser in the dashboard, search for "Neodymium" and click "Install". The fabric loader and Minecraft 1.20.4 are configured automatically.
Start Server & Play
Start the server – all mods are loaded automatically. Share the server IP with friends and play together!
Frequently Asked Questions
Neodymium server crashes or won't start – what to do?
Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 8 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.
How much RAM does a Neodymium server really need?
Minimum 6 GB, recommended 8 GB for stable performance. per 5 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €7.800000000000001/month).
Can I add custom mods to Neodymium without conflicts?
Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.20.4). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.
Neodymium server lagging – performance tips
1) Increase RAM to 8 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.
Similar Modpacks
Rent Neodymium Server
Start your own server with automatic modpack installation.
Details
- License
- GNU Lesser General Public License v3.0 only
- Server-side
- Required
- Client-side
- Required
Supported Versions
Start your Neodymium Server now
From €7.80/month; 8 GB RAM is recommended for best performance.
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