Eureka! [UNOFFICIAL PORT]
by LumixTeam
Eureka! [UNOFFICIAL PORT] brings the Eureka physics-based airship and ocean vessel mod to newer Minecraft versions and loaders, and it is server-side only.
What it does
The port lets players turn almost any block structure into a functional ship that moves on water and in the air, using the physics core of Valkyrien Skies. Valkyrien Skies 2 gains this addon as its main extension, and it cannot start without Valkyrien Skies, Architectury API and Kotlin for Forge in place. Players join without installing it, because only the server needs the port.
Files are published for Fabric and NeoForge, across the 1.21.1 – 26.2 range with builds for 1.21.1, 1.21.11 and 26.2. The latest Fabric file is 1.5.3 for 1.21.11, and the latest NeoForge file is 1.6.3 for 26.2 on the beta channel. Under the Apache License 2.0, which mirrors the license of the original mod, the port's source code is open source. Install the required dependencies for the exact Minecraft version and loader in use.
Key features
Block structures as ships
Assembled block structures become physics-based vessels that float, sail and carry players.
Newer Minecraft versions
The port makes the Eureka design available on versions and loaders newer than the original mod supports.
Valkyrien Skies addon
Eureka works as the primary addon for Valkyrien Skies 2, extending its ship physics with airship and ocean vessel parts.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Use cases
Modern server builds
Server owners on 1.21.1 – 26.2 can add airships and ocean vessels while keeping clients unchanged.
Who it’s for: Server owners and players who want physics-based airships and ocean vessels on recent Minecraft versions with Fabric or NeoForge.
How it compares
Eureka Effect is a Fabric-only server mod, not open source under the MIT License, covering 1.20.1 – 1.21.9. Valkyrien Skies runs on Fabric and Forge for 1.12.2 – 1.20.1 as a client and server mod under the GNU Lesser General Public License v3.0 only, and it is open source. This port targets newer versions than either.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Eureka! [UNOFFICIAL PORT] | Fabric and NeoForge | 1.21.1 – 26.2 | Server-side only | 2026-08-24 |
| Eureka Effect | Fabric | 1.20.1 – 1.21.9 | Server-side only | 2025-10-04 |
| Valkyrien Skies | Fabric and Forge | 1.12.2 – 1.20.1 | Client and server | 2026-04-10 |
Questions
Does Eureka! [UNOFFICIAL PORT] need Valkyrien Skies?
Do players need to install Eureka! [UNOFFICIAL PORT]?
Which loaders does the port support?
In the catalog
Eureka! [UNOFFICIAL PORT] is one of 3,932 Transportation mods on ModsFinder, and one of 2,390 Transportation mods for Fabric. 13,894 mods support Minecraft 26.2.
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What the author says
Eureka! Ships is the primary addon for Valkyrien Skies 2, allowing you to turn almost any block structure into a fully functional, physics-based airship or ocean vessel. This port brings Eureka! Ships to newer Minecraft versions and loaders, allowing it to be used alongside modern versions of Valkyrien Skies.
Official listing
- Modrinth page
- modrinth.com/mod/eureka-unofficial-port
- Owner
- LumixTeam
- Published
- 2026-05-27
- Updated on Modrinth
- 2026-08-24
- Facts verified
- 2026-10-15