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AI game development, inside Unreal

From idea to
playable world.

Realm Designer is your AI copilot inside Unreal Engine. Create Blueprints, gameplay systems, materials, AI, VFX and ship-ready builds — all in plain English, with preview and undo before anything touches your project.

Start building Explore the workflow
RealmExample — Unreal Editor
Generated Unreal Engine level preview
InputAction JumpCan Jump?Launch CharacterDrain StaminaSET Stamina

Live build

World build · 82%

  • ✓ Generating geometry
  • ✓ Placing set dressing
  • ✓ Compiling Blueprints
  • ◌ Cooking content

Blueprints in minutes

Ship systems, not scaffolding.

Self-healing execution

Reads its own logs. Fixes. Retries.

UE 5.0–5.8 support

From 5.0 to the latest.

One copilot. Every system.

Build complete games, end to end.

Environments are one category. Realm Designer also handles characters, animation, dynamic menus, audio hooks, technical art and optimization.

Gameplay & Blueprints

Movement, combat, inventory, quests, abilities, save/load — modular Blueprints with exposed tuning variables.

Materials & VFX

Material graphs, instances, parameter wiring and Niagara systems from text or a reference image.

AI & Systems

Behavior Trees, Blackboards, EQS, perception, spawning and game-state management.

Level Design

Landscapes, lighting, HDRI skies, fog, post-process, PCG scatter and world presentation.

Debugging & Fixes

Reads the Output Log, diagnoses compile failures and repairs the asset without rebuilding your work.

Packaging & Shipping

Cook and package configuration, platform settings and build validation.

Workflow

Describe → Generate → Validate → Ship.

01

Describe

Say what you want in plain English. Attach your level, selection or a reference image.

02

Generate

Realm Designer plans the system, then authors Blueprints, widgets, materials and assets.

03

Validate

It compiles, tests and reports exactly which assets changed — with preview and undo.

04

Ship

Cook, package and validate builds for your target platforms.

UE5 Plugin

Install once. Every project on your machine gets the copilot.

A Python-first editor plugin — no Visual Studio, no compiling. Run the installer, pick your engine version, and Realm Designer appears under Tools → Open Realm Designer with @-mentions for levels, actors and assets, Copilot/Autopilot modes and self-healing execution.

Sign in to downloadUE 5.0–5.8 · Python Editor Script Plugin required
Engine/Plugins/Marketplace/
└── RealmDesigner/
    ├── RealmDesigner.uplugin
    └── Content/Python/
        ├── init_unreal.py
        ├── realm_chat.py
        └── realm_skills/

> Tools ▸ Open Realm Designer
> describe what to build
> ✓ Blueprint compiled & saved