World Building

Create landscapes, biomes, weather, and environmental systems.

World Building tools handle large-scale environment creation — landscapes, biomes, weather systems, and time-of-day cycles. These are the tools for open-world and exploration-heavy games.

Landscape generation

Describe terrain features and Ocsidian generates Unreal Landscape actors with appropriate heightmaps, material layers, and foliage painting.

Rolling hills with dense pine forests transitioning 
into rocky mountain terrain. A river cutting through 
the valley with a waterfall on the eastern edge.

Biome system

Ocsidian supports multi-biome worlds. Specify transitions between biomes and the AI handles material blending, foliage density gradients, and atmospheric changes.

Weather and atmosphere

• Dynamic weather — rain, snow, fog, storms, clear sky
• Day/night cycle with configurable duration
• Volumetric clouds and god rays
• Wind zones affecting foliage and particle systems

Water systems

Generate rivers, lakes, oceans, and waterfalls using Unreal’s Water system. The AI configures flow maps, material properties, and buoyancy physics.