Source-checkedWorld generation

RTG Plus

by Zeno410 · for Minecraft

RTG Plus adds extensive and immersive variety to forests, which vary in tree composition, height, and density to RTG's extensive terrain variability, broad navigable rivers and lakes, soaring mountains, rolling hills, and sweeping plains.

12KDownloads
7d agoLast updated
LGPL-3.0-or-laterLicense
ForgeLoaders

About RTG Plus

From Modrinth

RTG Plus adds extensive and immersive variety to forests, which vary in tree composition, height, and density to RTG's extensive terrain variability, broad navigable rivers and lakes, soaring mountains, rolling hills, and sweeping plains.

Screenshots from a modded world with RTG

Realistic Terrain Generation Plus is a fork of RTG that adds extensive and immersive variety to forests, which vary in tree composition, height, and density. It adds on to RTG's extensive terrain variability, broad navigable rivers and lakes, soaring mountains, rolling hills, and sweeping plains.

RTG plus adds multiple versions of many basic trees, including Oak, Spruce, Birch, Acacia, and Dark Oak, in a wide variety of sizes. Larger trees are generated fractally so each tree is different. Forests vary in composition, density, and height from place to place - from only one tree to complex mixtures, from open woodland to canopy forest, and from shrub forests to soaring cathedral forest.

USAGE: Start a new world with the "RTG" worldtype. The current version of Geographicraft is strongly recommended for increased landscape variety, but RTG+ is still great with vanilla layout.

Follow the ongoing development and read about on-the-ground play experience in my modded journal. Or join us at Discord.

Bugfixes and improvements from last RTG release:

Deeper scenic lakes. Shallower rivers. Extra stone no longer placed at water's edge. Smaller Roofed Forest trees to prevent generation hangs. More irregular Mesa. New Bryce design, better looking and traverable New method for growing RTG trees from groups of saplings Willow trees no longer generate with decaying leaves. Support for all BoP biomes (a few were missing). Support for Thaumcraft biomes. Savanna landmarks bigger and more impressive,

Growing RTG trees:

Spoiler

Saplings with no sapling adjacent to them orthogonally or diagonally will grow as vanilla trees.

Saplings where 2x2 patterns grow special vanilla trees (jungle, spruce, and dark oak) will grow those trees.

RTG trees grow from oak, birch, spruce, acacia, and dark oark saplings placed as groups within a 3x3 area with a sapling in the middle.

With oak, birch, and spruce, The more saplings in the 3x3 area, the taller the tree. 2 adjacent oak saplings will grow something like this (there is some variability in size):

6 Oak saplings in a 2x3 area grow into:

(both size and shape can vary with larger trees)

2 adjacent birch saplings grow into something like:

While 6 within a 3x3 array grow into:

2 adjacent spruce saplings:

While 6 within a 3x3 array grow into:

There is one special exception: a pattern of 3 oak saplings forming an obtuse angle:

Grows into an RTG Swamp Willow:

Two acacia saplings:

Due to the large size of vanilla acacias, the algorithm will sometime produce a vanilla acacia

The largest acacias that RTG generates are roughly the size produced by a group of 4 saplings:

Larger groups will grow into yet bigger trees.

Two dark oak saplings together will produce one of the RTG Roofed Forest trees:

And three will produce the other:

2x2 will produce a vanilla dark oak, as mentioned above. Other sizes of dark oak sapling groups produce nothing.

Highlights

From source data

Game versions

Supports 3 Minecraft versions, the newest being 1.12.2.

Loaders

Runs on Forge.

Footprint

Rated a light load on a server.

RTG Plus on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Forge
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
9.0.4, released 2026-10-28

Game versions by loader

LoaderGame versionsNewest
Forge1.12 to 1.12.2 (3 versions)1.12.2

From 8 recorded builds of RTG Plus.

Recent builds

BuildReleasedGame versionsLoaders
9.0.42026-10-281.12.2Forge
9.0.3 beta2026-10-111.12.2Forge
9.0 beta2026-10-031.12.2Forge
7.3.3.4 alpha2024-07-221.12.2Forge
7.3.3.1 alpha2024-06-301.12.2Forge
7.3 beta2024-06-291.12 to 1.12.2 (3 versions)Forge

Run RTG Plus on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

World generation

Changes or adds to how new terrain, biomes and structures are created.

Runs on your server

From source side support

Modrinth lists RTG Plus as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
Forge
Runs on
Serverrequired on the server
Game versions
1.12.2 and 2 earlier

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-29Open ↗
  • ✓AuthorZeno410, as published on Modrinth
  • ✓LicenseLGPL-3.0-or-laterFree

RTG Plus, answered

Generated from the mod’s own source data.

Do my players need to install RTG Plus?

Modrinth lists RTG Plus as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Forge.

Is it free?

Yes. RTG Plus is free to download from Modrinth. Its license is LGPL-3.0-or-later.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run RTG Plus on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add RTG Plus in one click.