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Open Terrain Generator Mod Wiki & Guide

Java EditionMod

Open Terrain Generator (OTG) is a powerful world generation engine for Minecraft that allows players and developers to create entirely custom worlds, biomes, and structures using a data-driven configuration system without needing Java knowledge.

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Contents (3)
  1. Overview
  2. Main Features
  3. In this wiki

Overview

Open Terrain Generator (OTG) is not a standard world generator but a highly advanced terrain engine. It replaces the default Minecraft world generation logic with a fully customizable system. By itself, OTG generates a world similar to vanilla, but its true power lies in World Presets—pre-packaged configurations that can create anything from floating island chains to massive underground cavern worlds.

Main Features

  • Total Terrain Control: Adjust horizontal and vertical noise, terrain height, and volatility.
  • Custom Biomes: Create new biomes with unique climates, foliage colors, and terrain shapes.
  • Advanced Structures: Design large, branching structures (villages, dungeons, cities) using the BO3 and BO4 systems.
  • Image-to-World: Generate biome maps directly from image files (PNG/BMP).
  • Multi-Dimension Support: Create custom dimensions with unique portals and physical laws (gravity, weather).
  • In-Game GUI: Manage worlds and dimensions via an intuitive 'O' menu interface.

Reference

GuideConfigurationReference