AI Game Dev Kit

The AI game dev kit

Game dev tools an AI agent can actually drive, each scored out of 18 on six checks. How scoring works

  1. Codex CLI

    Open source terminal agent from OpenAI with MCP client support and sandboxed command runs.

    • MCP
    • CLI
    • Text
    • Open
    Free tier17
  2. Gemini CLI

    Open source terminal agent with a generous free quota, large context and MCP support.

    • MCP
    • CLI
    • Text
    • Open
    Free tier17
  3. Claude Code

    Terminal agent that edits whole projects, runs the headless engine and connects to any MCP bridge above.

    • MCP
    • CLI
    • Text
    • llms.txt
    Paid16
  4. earshot

    Gives coding agents ears: MCP tools that describe, rank, measure and critique sound, CPU only.

    • MCP
    • CLI
    • Open
    Free16
  5. Godot

    Scenes (.tscn) and GDScript are plain text an agent edits directly, and the editor runs headless for builds and tests.

    • CLI
    • Text
    • Open
    Free16
  6. three.js

    The default 3D library for the web; huge example corpus means agents rarely guess.

    • CLI
    • Text
    • Open
    • llms.txt
    Free16
  7. Bevy

    Code-only Rust ECS engine: the whole game is source files, and the compiler checks agent edits.

    • CLI
    • Text
    • Open
    Free15
  8. Blender MCP

    Agent runs Python inside live Blender, pulls Poly Haven assets and calls Hyper3D generation.

    • MCP
    • Open
    Free15
  9. Blockbench MCP

    Plugin that exposes Blockbench modeling, texturing and animation to MCP clients.

    • MCP
    • Text
    • Open
    Free15
  10. Defold

    Small 2D-first engine with text collection files, Lua scripts and the bob.jar command line builder.

    • CLI
    • Text
    • llms.txt
    Free15
  11. GitHub Copilot

    Agent mode in VS Code and Rider plus a cloud coding agent that opens PRs; MCP capable.

    • MCP
    • Text
    • llms.txt
    Free tier15
  12. Godot MCP

    Lets an agent launch the Godot editor, run the project and read debug output, closing the edit and test loop.

    • MCP
    • CLI
    • Text
    • Open
    Free15
  13. Tiled

    2D tile map editor with XML or JSON maps, CLI export and a JavaScript scripting API.

    • CLI
    • Text
    • Open
    Free15
  14. Unity-MCP (AI Game Developer)

    Unity MCP plus CLI and runtime tools; any C# method becomes an agent tool with one attribute.

    • MCP
    • CLI
    • Open
    Free15
  15. Aseprite MCP

    Lets an agent draw, fill and export sprites through Aseprite's Lua API.

    • MCP
    • CLI
    • Open
    Free14
  16. Blender

    Full 3D suite with a complete Python API and `blender -b` headless mode; the most agent-drivable DCC.

    • CLI
    • Open
    Free14
  17. Blockbench

    Low-poly and voxel-style modeler whose .bbmodel files are readable JSON.

    • Text
    • Open
    Free14
  18. Cursor

    AI code editor with agent mode, MCP servers and a CLI agent; good for C# and C++ engine code.

    • MCP
    • Text
    Free tier14
  19. GdUnit4

    Godot test framework with scene runners, input simulation, C# support and a CI action.

    • CLI
    • Text
    • Open
    Free14
  20. LÖVE

    Tiny Lua 2D framework: a game is a folder of .lua files, run with one command.

    • CLI
    • Text
    • Open
    Free14
  21. Phaser

    HTML5 game framework in plain JS or TS, the language agents write best, with instant browser preview.

    • CLI
    • Text
    • Open
    Free14
  22. Poly Haven

    CC0 HDRIs, PBR textures and models with a public API, already wired into Blender MCP.

    • CLI
    • Open
    • llms.txt
    Free14
  23. Unity MCP

    Bridge from Claude, Cursor and others into the Unity Editor: scenes, assets, scripts and console.

    • MCP
    • Open
    Free14
  24. Unreal MCP

    MCP server plus a native C++ automation bridge: agents spawn actors, edit Blueprints and run the editor.

    • MCP
    • Open
    Free14
  25. Aseprite

    The pixel art and sprite animation standard, with a batch CLI, Lua scripting and JSON sheet export.

    • CLI
    Paid13
  26. Dialogue Manager

    Branching dialogue written in a screenplay-like .dialogue text format agents can author.

    • Text
    • Open
    Free13
  27. ElevenLabs Sound Effects

    Text to sound effects and voice over an API, with an official hosted MCP server (OAuth, nothing to install).

    • MCP
    • CLI
    • llms.txt
    Free tier13
  28. func_godot

    Imports TrenchBroom .map files into Godot scenes, so text levels become playable geometry.

    • Text
    • Open
    Free13
  29. GUT

    Godot unit testing in GDScript, runnable from the command line so agents can verify their own edits.

    • CLI
    • Text
    • Open
    Free13
  30. LDtk

    Modern 2D level editor from the Dead Cells director; one JSON file with a published schema.

    • Text
    • Open
    Free13
  31. LimboAI

    Behavior trees plus hierarchical state machines for Godot NPCs, with a visual debugger.

    • Text
    • Open
    Free13
  32. Maaack's Game Template

    Main, pause and options menus, loading screens and input rebinding as plain scenes, the shell every build needs.

    • Text
    • Open
    Free13
  33. Meshy

    Text and image to textured 3D models over a REST API, with an official MCP server.

    • MCP
    • CLI
    • llms.txt
    Free tier13
  34. Phantom Camera

    Cinemachine-style cameras for Godot: follow, framing and blends set as node properties.

    • Text
    • Open
    Free13
  35. PixelLab

    AI pixel art: characters with directional views, animations and tilesets, via API and MCP.

    • MCP
    • CLI
    • llms.txt
    Free tier13
  36. RenderDoc

    Standard GPU frame debugger with a Python API and command line capture.

    • CLI
    • Open
    Free13
  37. RenderDoc MCP

    Hands GPU frame captures to an agent: draw calls, state and resources, for rendering bugs.

    • MCP
    • Open
    Free13
  38. Beehave

    Node-based behavior trees in pure GDScript; trees live in the scene file.

    • Text
    • Open
    Free12
  39. Dialogic 2

    Timeline editor for characters, portraits and events; timelines save as readable text.

    • Open
    Free12
  40. ProtonScatter

    Procedural placement of props, grass and rocks along shapes, defined as stacked text resources.

    • Text
    • Open
    Free12
  41. TrenchBroom

    Brush-based 3D level editor; Quake .map files are plain text geometry.

    • Text
    • Open
    Free12
  42. Tripo

    Fast image to 3D with auto rigging, an API and an official MCP server.

    • MCP
    • CLI
    • llms.txt
    Free tier12
  43. Unity

    Biggest asset and tutorial ecosystem; batchmode builds and strong community MCP bridges make it agent-workable.

    • llms.txt
    Free tier12
  44. Unreal Engine

    Top-end 3D with editor Python scripting and commandlets; agents work through MCP bridges since assets are binary.

    • llms.txt
    Free tier12
  45. ambientCG

    CC0 PBR materials and HDRIs with a JSON API for scripted downloads.

    • CLI
    • Open
    Free11
  46. Freesound

    Huge Creative Commons sound library with a search and download API; filter to CC0.

    • CLI
    • Open
    Free11
  47. Higgsfield 3D

    Image to GLB generation plus image and video models, all behind one official MCP server.

    • MCP
    • llms.txt
    Free tier11
  48. Hyper3D Rodin

    High quality text and image to 3D; built into Blender MCP so agents can generate in-scene.

    • CLI
    • llms.txt
    Free tier11
  49. Juicee

    Game feel graphs for Godot: hit-stop, flashes, punches and shakes without hand-written tweens.

    • Open
    Free11
  50. Pixelorama

    Open source pixel editor built in Godot, with command line export.

    • Open
    Free11
  51. Spine

    2D skeletal animation with JSON skeleton data and a command line exporter.

    • CLI
    Paid11
  52. Terrain3D

    High performance editable terrain for Godot in C++, with a GDScript API for generation.

    • Open
    Free11
  53. Tracy

    Frame profiler for CPU, GPU and memory, with capture and CSV export tools for headless runs.

    • Open
    Free11
  54. Debug Draw 3D

    One-line calls to draw rays, paths and volumes in game, so agents can make their logic visible in screenshots.

    • Open
    Free10
  55. jsfxr

    Retro sound effect generator whose sounds are small parameter strings an agent can write.

    • Text
    • Open
    Free10
  56. LibreSprite

    Free GPL fork of old Aseprite with the same batch CLI basics and JavaScript scripting.

    • Open
    Free10
  57. Godot VAT plugin

    Vertex animation textures on MultiMesh: hundreds of animated characters in one draw call.

    • Open
    Free9
  58. Poly Pizza

    Searchable low-poly model library with an API; searchable from Blender MCP setups.

    • Open
    Free9
  59. Rive

    Interactive vector animation with state machines, runtimes for Unity, Unreal and the web.

    • llms.txt
    Free tier9
  60. Kenney

    Tens of thousands of consistent CC0 sprites, models, UI and audio; perfect placeholder to ship quality.

    • Open
    Free8
  61. Cascadeur

    Physics-assisted keyframe animation with AutoPosing and a Python API.

      Free tier7
    • Quaternius

      CC0 low-poly packs with rigged and animated characters in glTF and FBX.

      • Open
      Free6
    • OpenGameArt

      Long-running community library of free 2D, 3D and audio assets under open licenses.

      • Open
      Free5
    • Sonniss GDC Bundle

      Yearly multi-gigabyte pack of pro game SFX, royalty free for commercial use.

        Free5
      • Mixamo

        Free auto rigging and a large mocap clip library for humanoids; still the fastest rig for prototypes.

          Free4

        65 tools