World Preview TFC

Fork of World Preview Neoforged adding TFC support and features.

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About this Mod

World Preview TFC

Fork of World Preview
World Preview TFC adds a World Preview tab to the Create World screen and uses TerraFirmaCraft (TFC) world generation to preview seeds.
It can visualize biomes, temperature, rainfall, land and water, rock types, rock layers, kaolin clay areas and hotspots.

Issue tracker: https://github.com/TKFT/World-Preview-TFC/issues

Requirements

Minecraft 1.21.1
NeoForge 21.1.213+ (21.1.218 recommended)
TerraFirmaCraft (TFC) 4.0.17+
Java 21

Installation

Install NeoForge for Minecraft 1.21.1.
Install TerraFirmaCraft (TFC) 4.0.17+.
Place the World Preview TFC jar in your instance mods folder.

Usage

Open Create New World and switch to the World Preview tab. Drag on the map to move along X and Z. This will load:

Biomes
Heightmap (if enabled)
Rainfall Map
Tempature Map
Land/Water/River Map
Rock Layer Maps
Rock Type Map
Kaolin Clay Areas Map
Hotspot Map
Volcano Icons

Other Features

Persistent seed storage
Highlighting specific biomes
Highly configurable and extendable
Seed Searching
Volcano Icons

Compatibility

Incompatible with the original World Preview Neoforged mod (mod id world_preview)
No other known incompatibilities; reported to work with Beneath

TODO

Add compatiblity with other worldgen mods like Real World and Eratosthenes

Available Versions

World Preview TFC 2.0.1release

MC 1.21.1neoforge

March 9, 2026

World Preview TFC 2.0.0release

MC 1.21.1neoforge

February 24, 2026

How to Install World Preview TFC on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "World Preview TFC". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

World Preview TFC server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.1). You can switch loaders with one click in the panel.

Is World Preview TFC compatible with neoforge?

World Preview TFC officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with World Preview TFC – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if World Preview TFC 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.