The Base-X World Prompt Engine is a natural language procedural world generation plugin for Unreal Engine. Simply type a plain English description of the world you want to build and the engine generates a complete 3D environment in real time — terrain, biomes, structures, and weather, all driven by your words. No scripting, no node graphs, no manual placement required.
Base-X World Prompt Engine — An Unreal Engine Plugin by Troll Hunter Gaming
Type a plain-English description of a world, and Base-X builds it in Unreal Engine in seconds: terrain, biomes, rivers and lakes, structures, and weather, all driven by your words. No scripting, no node graphs, no manual placement.
“A hidden elven valley beneath misty mountain cliffs, an elven palace on the cliff, a river flowing into a lake in the valley, two stone bridges over the river, gardens around the palace, lanterns along the river, pine and birch forest, fountains, gazebos, and soft mist at dawn”
New in version 1.3
- Relation words: say where things go. “A lighthouse on the cliff”, “walls around the castle”, “a bridge over the river”, “a well between the inn and the forge”.
- Rivers, lakes and lava: rivers run downhill from the high ground and flow through lakes. “Rivers of lava” become glowing channels.
- Seeds: the same prompt and seed always give the same world. One click gives a new variation.
- Bake World: save any generated world as a normal, editable Unreal level.
- Redesigned Hub: collapsible keyword lists, a search filter, seed controls.
- Ready-to-use content: default materials and 186 structure meshes are included and work in packaged games.
What’s included
- 26 terrain types, including mountains, canyons, volcanoes, fjords and archipelagos
- 52 biome palettes
- 186 structure types: castles, temples, villages, ruins, trees, crystals, rock formations and more
- 48 weather keywords, from aurora borealis to sandstorms, with intensity (“heavy rain”, “light fog”)
- 7 water features: river, stream, creek, brook, lake, pond, lagoon
- 24 one-click preset worlds
- Terrain sizes from 16×16 to 256×256
- Counts and density: “5 towers”, “a few huts”, “dense forest”
- Bring Your Own Assets: map your own meshes to any keyword with the built-in Asset Mapper
Quick start
- Enable Base-X World Generation Engine in Edit → Plugins.
- Drag BaseXPromptDemo into a level and press Play.
- Type a prompt (or click keyword tags or a preset), then click Generate World.
- Like the result? Click Bake World, stop Play, and open the saved level from Content → BaseXBaked.
Writing prompts
- Combine terrain, biome, structure, water and weather words: “volcanic island, obsidian beach, crystal spire, ash clouds at dawn”.
- Place things with relation words:
- near / beside / by
- on the hill / cliff / summit
- in the valley / canyon
- at the center
- on the edge
- along the shore / river
- around / surrounded by
- over the river
- between X and Y
- flowing into the lake
- If a relation can’t be honored (for example, “at the center” when the center is underwater), the Hub says so and places the structure normally.
For developers. Everything is available from Blueprint and C++ through UBaseXWorldBuilder:
- generate from a prompt
- read the parsed keywords and relations
- read heights, water and structure placements
- spawn the terrain, structures and weather actors
A PC VR tablet actor, ABaseXVRWorldBuilder, is included for in-headset world building.
About DRO. Base-X comes from the Base-X Game Engine, home of Dynamic Radix Optimization™ (DRO), Troll Hunter Gaming’s patent-pending precision-scaling technology. In this plugin, DRO provides radix-precision metrics (GetDROMetrics, GetOptimalRadix) you can use in your own LOD and performance tools.
Requirements. Unreal Engine 5.7 (5.8 coming), Windows 64-bit, desktop and PC VR. Standalone Quest is not supported.
Support. Questions, bug reports or licensing: trollhuntergamingco@gmail.com
Created by Keenan Wallace Dunham. DRO, LOD and the Base-X Game Engine are patent pending (USPTO). © 2026 Troll Hunter Gaming LLC. All rights reserved.
Under the hood, the plugin is powered by Dynamic Radix Optimization™ (DRO) — Troll Hunter Gaming’s patent-pending precision scaling technology embedded in the Base-X Game Engine. DRO adaptively shifts mathematical precision across subsystems from Base-4 to Base-64 depending on what the engine is computing at any given moment, delivering maximum fidelity where it matters and maximum performance everywhere else. The result is world generation that is both visually rich and VR-ready.