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Bygone Fortress Plus

by Cassian

Bygone Fortress Plus reworks the vanilla Nether fortress into a larger structure, ported from the original Bygone Nether fortress for newer game versions.

FabricForgeNeoForgeClient and serverMIT LicenseOpen source1.20.1 – 26.2

What it does

The mod overhauls the vanilla fortress and gives it a grander scope, carrying over the fortress that first appeared in the Bygone Nether mod. Fabric API is required on Fabric, and the mod runs on client and server, so both the server and every player need it. Builds cover 1.20.1 – 26.2 for Fabric, Forge and NeoForge, and the code is open source under the MIT License.

Key features

  1. Larger Nether fortress

    The vanilla Nether fortress is expanded into a grander structure with more scope to explore.

  2. Original fortress design

    The layout carries over the fortress first introduced in the Bygone Nether mod.

  3. Kept current

    Backports and updates follow the latest game versions, with major releases maintained over time.

Compatibility

Latest build for each game version and loader.

26.21.0.1+26.2-fabricNot availableNot available
26.1.21.0.1+26.1.2-fabricNot availableNot available
26.1.11.0.1+26.1.2-fabricNot availableNot available
26.11.0.1+26.1.2-fabricNot availableNot available
1.21.111.0.0+1.21.11-fabricNot availableNot available
1.21.11.0.0+1.21.1-fabricNot available1.0.0+1.21.1-neoforge
1.20.11.0.0+1.20.1-fabric1.0.0+1.20.1-forgeNot available
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required

How it compares

Full comparison

Bygone Nether is the mod this fortress comes from, open source under the MIT License and published for 1.16.5 – 1.20.1 on Fabric and Forge. Updated Nether Fortress is not open source, runs server required with optional client, and covers 1.21 – 26.3.

ModLoadersGame versionsEnvironmentUpdated
Bygone Fortress PlusFabric, Forge and NeoForge1.20.1 – 26.2Client and server2026-08-06
Bygone NetherFabric and Forge1.16.5 – 1.20.1Client and server2024-07-17
Updated Nether FortressFabric, Forge, NeoForge and Quilt1.21 – 26.3Server required, client optional2026-09-20

Questions

Does Bygone Fortress Plus need Fabric API?

Yes on Fabric, where Fabric API is listed as a required dependency. Forge and NeoForge builds do not name it.

Does the server need Bygone Fortress Plus?

Yes. Installation covers the server and each player's game.

Which file is the latest for NeoForge?

The latest NeoForge file is 1.0.0+1.21.1-neoforge for 1.21.1, published 2025-12-23.

In the catalog

Bygone Fortress Plus is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 13,894 mods support Minecraft 26.2.

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What the author says

Bygone Fortress Plus overhauls the vanilla fortress, giving it a more grand scope. This fortress was originally present in the Bygone Nether mod, then the Bygone Fortress mod, and now here in an updated port. Bygone Fortress Plus is available under the open source MIT License, matching the original mod.
Cassian, on the Modrinth page

Official listing

Owner
Cassian
Published
2025-12-23
Updated on Modrinth
2026-08-06
Facts verified
2026-10-15

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