LLM Agent Builds Complete Godot 4 Dungeon Crawler Using Visual Feedback

A developer demonstrated an LLM agent autonomously building a complete dungeon crawler game in Godot 4 using visual feedback. The agent was connected to the Godot editor via an MCP tool the developer is building.

What the Agent Built

With a single prompt to "build a dungeon crawler FPS using Kenney's dungeon kit," the agent created:

• 3 rooms connected by corridors
• Atmospheric torch lighting with particles
• FPS controls with head bob
• Sword combat system
• 4 enemy types with pathfinding
• Wave-based enemy spawning system
• Loot drops
• XP progression mechanics
• Game over screen

Key Technical Details

The project consisted of approximately:

• 300 nodes
• 11 scripts
• 1500 lines of GDScript

The game ran successfully on the first F5 execution, producing a playable prototype.

Visual Feedback Loop

The significant aspect wasn't just code generation—any LLM can write code. What made this different was the agent's ability to:

• Run the game and take screenshots
• Visually identify problems and fix them
• Notice torch particles were too bright for the fog and adjust the environment
• See orcs clipping through walls and tweak navigation settings
• Check chest UI layout visually for proper positioning

This approach represents a shift from pure code generation to integrated development where the agent can test and iterate based on actual game output.