Odonis.jar: The Niflheim Dimension
by Pa-al-br
Odonis.jar: The Niflheim Dimension adds a cold, mirror-like dimension with new mobs, ores and a portal built from Smooth Stone instead of Obsidian.
What it does
Niflheim is a cold dimension that mirrors the overworld and holds rare new mobs. The mod also includes Tartarus, a large flooded dimension where crossing a single block covers four chunks, and an aether-style dimension with heavenly mobs and sky villages. Ruined Niflheim portals appear around the overworld, so players can find the route before crafting their own.
The additions are aimed at players who want more to do after the Nether and End, and they cover roughly 70 new natural blocks, ores and plants, plus constructive and functional blocks, armor and tool sets, and resources such as Uranium, Galvarode, Thulium and Bismuth. The mod is built for NeoForge on 1.21.8 only, and it runs on the client and the server, so both need it. It is released under the Creative Commons Attribution 4.0 license and is not open source.
Key features
Niflheim portal
The Niflheim portal is built from Smooth Stone and lit with a Niflheim Igniter, which is crafted from coal, iron and leather.
Gehennic Cluster structure
Gehennic Cluster blocks serve as the structure that holds the portal, with a resistance similar to Obsidian.
Tartarus route
The Tartarus Enabler ignites a portal that leads deep underground, where cave routes make the way back up slow.
Galvarode blocks
Galvarode forge blocks produce alloy blocks that are hard to tell apart from the base Galvarode blocks.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does Odonis.jar need a specific pickaxe?
Which Minecraft version does the mod support?
Does the server need the mod?
In the catalog
Odonis.jar: The Niflheim Dimension is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 17,695 mods support Minecraft 1.21.8.
Similar mods
What the author says
A mod made to both enhance and complexify the "early-mid and mid-late experience" of a minecraft playthrough. As well as expanding the game overall to a generic level. Seeking to be its own "exploration update" for the game. Odonis.jar's main features includes a new primary dimension, being the Niflheim. As well as…
Official listing
- Modrinth page
- modrinth.com/mod/odonis.jar
- Owner
- Pa-al-br
- Published
- 2026-06-08
- Updated on Modrinth
- 2026-09-22
- Facts verified
- 2026-10-15