Castle Shift
Castle Shift introduces procedurally generated castles with diverse layouts, modular room variations, and dynamic architectural themes — creating a different structure each time.
Screenshots
About this Mod
🏰 Castle Shift - Castles in Your World
Discover stone brick castles naturally generated across the landscape!
Castle Shift is a structure mod that adds multi-story castles to Minecraft's world generation. Each castle features randomized structural variations, so no two castles are exactly alike.
✨ Features
🏗️ Multi-Story Castles
- 4-Floor Structures: Grand castles with walls, towers, and corridors
- Natural Placement: Castles generate organically in a wide variety of biomes
🎨 Randomized Materials
Each castle's roofs, walls, and stairs are built from materials randomly selected per castle, so no two castles look the same!
- Roofs: Spruce, Dark Oak, Deepslate Bricks, Dark Prismarine, Red Nether Bricks, Crimson
- Walls: Stone Bricks, Deepslate Bricks, Polished Blackstone Bricks, Sandstone, End Stone Bricks
- Stairs: Bricks, Stone Bricks, Polished Granite, Deepslate Bricks, Polished Blackstone, Polished Blackstone Bricks, Red Nether Bricks
🧱 Structural Variations & Weathering
- Multiple Templates: Each floor section (walls, corners, centers, towers) has multiple structure templates chosen at random
- Wall Weathering: Stone brick and polished blackstone brick walls may randomly degrade into cobblestone, andesite, or cracked variants for a lived-in look
📦 Datapack-Friendly
- Structure placement can be customized via datapacks
- Adjust spacing, separation, and biome filters to your liking
🛠️ Technical Details
Multi-Loader & Multi-Version Support
This mod supports multiple Minecraft versions and mod loaders!
- 1.21.1: Fabric and NeoForge
- 1.20.1: Fabric and Forge
- Download the correct version for your Minecraft version and mod loader
- Shared codebase ensures consistent experience across versions and loaders
Requirements
Minecraft 1.21.1
- Mod Loader:
- Fabric Loader 0.17.3+ with Fabric API 0.116.7+1.21.1, OR
- NeoForge 21.1.209+
Minecraft 1.20.1
- Mod Loader:
- Fabric Loader 0.16.10+ with Fabric API 0.92.2+1.20.1, OR
- Forge 47.3.0+
Compatibility
- Works with most world generation mods
- Compatible with performance mods (Sodium, Starlight, etc.)
- Datapack-friendly worldgen configuration
🐛 Bug Reports & Suggestions
Found a bug or have a suggestion? Report it on our GitHub Issues page!
📷 Screenshots
Check out the Gallery above for screenshots showcasing the castles!
🤝 Credits
- Built with Architectury Loom
📜 License & Permissions
License: LGPL-3.0 - Copyright (C) 2026 Soichiro Kashima
Source Code: Available on GitHub
Freedom to Use: ✅ Free to use, modify, and redistribute under LGPL-3.0 terms
Modpack Inclusion: ✅ Allowed - You may include this mod in modpacks
Redistribution: ✅ Allowed - You may redistribute this mod (must remain LGPL-3.0)
🔗 Links
- GitHub Repository: https://github.com/ksoichiro/CastleShift
- CurseForge: [Link to CurseForge page]
Developed for Minecraft Java Edition 1.21.1 / 1.20.1
Explore the castles that await you. 🏰
Available Versions
How to Install Castle Shift on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "Castle Shift". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+9 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Castle Shift server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is Castle Shift compatible with fabric and forge and neoforge?
Castle Shift officially supports fabric, forge, neoforge for Minecraft 1.21.11, 1.21.10, 1.21.9. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Castle Shift – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Castle Shift consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Rent Modded Server
Install Castle Shift with just one click on your server.