LCPatches: Essential Fixes for the Lost Cities Mod in Minecraft 1.12.2
If you have ever explored the sprawling, procedurally generated metropolises of the Lost Cities mod, you know how immersive and hauntingly beautiful those abandoned skyscrapers can be. But even the best mods have quirks, and for the 1.12.2 version, official support has long since ended. That is where LCPatches steps in — a tiny coremod that breathes new life into your ruined worlds by fixing persistent bugs and adding creative control features that the original mod never had. Whether you are a modpack creator or a solo adventurer, this patch collection quietly transforms the Lost Cities experience without bloating your instance.
What Exactly Is LCPatches?
LCPatches is a lightweight coremod designed specifically for Minecraft 1.12.2. It targets the Lost Cities mod by McJty, a version that no longer receives official updates. The mod does not add new blocks, items, or world types; instead, it silently corrects overlooked issues and introduces simple, yet powerful, naming conventions that let you fine-tune how individual buildings generate. It is the kind of mod you install once and forget about, until you notice that your cityscapes look cleaner and your cellar generation finally behaves as intended.
Because it is a coremod, LCPatches works at a low level, patching the Lost Cities code directly. This means it requires no complex configuration — just drop it into your mods folder and the fixes apply automatically. The mod is published with full permission from McJty, so you can use it with confidence in your personal worlds or public modpacks.
Key Patches and Customization Options
The current version of LCPatches focuses on four main improvements, three of which give map makers and modpack developers an unprecedented level of control over building generation. Here is exactly what you get:
- Fixed mincellars option in Lost Cities assets. Previously, the setting that controlled the minimum number of cellars in a building did not work correctly, often ignoring user-defined values. This patch restores proper functionality, ensuring that your underground generation matches your configuration.
- #NOBORDER tag. By adding
#NOBORDERanywhere in the name of a building asset, that structure will generate without the default filler block border. This eliminates the unsightly frame of blocks that sometimes ruins the seamless integration of custom buildings into the city. - #NOCORRIDORS tag. Including
#NOCORRIDORSin a building name prevents the automatic generation of connecting corridors. This is perfect for standalone structures or when you want to design isolated landmarks without extra pathways. - #NODOORS tag. Adding
#NODOORSstops doors from spawning on the building. This is incredibly useful for creating open-air ruins, parkour challenges, or any scenario where you want to control entry points manually.
These naming tags are brilliantly simple. You do not need to edit JSON files or mess with complex configs — just rename your building schematics, and the coremod handles the rest. The mincellars fix, on the other hand, works globally, correcting an asset-wide issue that had frustrated many builders. If you have ever wondered why your cellars seemed to ignore your settings, this patch alone is worth the download.
How to Install and Use LCPatches
Installing LCPatches is straightforward. Since it is a coremod for 1.12.2, you will need Minecraft Forge for that version. Place the LCPatches jar file into your mods folder alongside the Lost Cities mod, and you are done. There are no additional dependencies, and the patches activate immediately on world load. If you prefer a more streamlined setup, this mod can be easily installed via the foxygame.net launcher — a convenient, flexible, and modern Minecraft launcher where you can download mods right from the menu, saving you the hassle of manual file management. This approach is especially handy when juggling multiple modded instances.
Once installed, applying the custom tags is as simple as renaming your building assets. For example, if you have a skyscraper called tall_tower.nbt, you can rename it to tall_tower#NOBORDER#NODOORS.nbt to generate it without borders or doors. The tags are not case-sensitive and can appear in any order, as long as they are part of the filename. This flexibility makes LCPatches an indispensable tool for anyone who creates custom Lost Cities content.
Performance and Future Plans
The mod author originally planned to include performance patches, aiming to optimize how Lost Cities handles large-scale generation. However, due to toolchain limitations with RetroGradle, further development is currently on hold. The creator has stated that the mod most likely will not receive upgrades unless the build environment becomes fully usable again. Despite this, the existing patches are stable and cover the most requested fixes. The community is encouraged to submit suggestions and issues on the mod's Github page, keeping the project alive through feedback.
One notable patch, the mincellars fix, is based on a pull request by Windmill-City, who receives 30% of the credit for that contribution. This collaborative spirit underscores the mod’s reliability — it is not just a quick hack but a well-tested improvement built on community input.
Compatibility and Credits
LCPatches is designed exclusively for Minecraft 1.12.2 and the corresponding version of the Lost Cities mod. It does not interfere with other mods and can be safely added to existing worlds. The coremod nature means it directly alters Lost Cities classes, so it is essential to keep a backup before adding it to a long-running save, though no world corruption has been reported.
The project is published with explicit permission from McJty, the original creator of Lost Cities. Special thanks go to geza3D for assistance with the door patch, and to Windmill-City for the foundational work on the cellar fix. This mod is a testament to how a small, focused tool can dramatically improve the quality of life for modded Minecraft players.
Final Thoughts
LCPatches may be tiny, but it fills a crucial gap for anyone still enjoying the Lost Cities mod in 1.12.2. The ability to strip away unwanted borders, corridors, and doors with a simple filename tweak gives builders creative freedom that the base mod never offered. Combined with the long-awaited cellar fix, it makes city generation more predictable and visually appealing. While future updates are uncertain, the current feature set is polished and stable.
If you are building a modpack centered around urban exploration, post-apocalyptic survival, or just want your Lost Cities to look cleaner, LCPatches deserves a spot in your mods folder. It is a quiet workhorse that respects your setup and asks for nothing in return — exactly the kind of mod that keeps the 1.12.2 community thriving years after official support ended.