Skip to content

Skywalker v0.1 · pre-release

The game engine built for AI agents, and the people who work with them.

A C++20 engine with a native macOS editor and a Metal renderer, where every capability is a tool that you, the in-editor crew and any MCP agent call the same way: agents see the scene, act on it precisely, test what they built and hand it back for review.

Get started Read the manual Agent guide

Launch trailer

Four minutes from the first prompt to a shipped game: the agent studio, Wander, the tool wall, guardrails, live edits, self-testing agents, the renderer and nine worlds built with the engine. Every shot was rendered in-engine. Download the 1080p version.

Why Skywalker

  • Everything is a tool

    More than 230 typed, schema-validated tools cover scenes, worlds, rendering, physics, animation, audio, UI, assets, the studio, movies and shipping. The editor, its crew and external agents share them, so humans and agents never have different powers. Errors come with did you mean …? hints.

    Tool reference

  • Agents can see

    viewport_capture returns an image plus every entity's screen box and id, with set-of-mark labels, G-buffer and diagnostic views, clay and sketch looks, and supersampled stills. perf_stats says where the frame time goes.

    How agents see

  • Undoable, attributed, deterministic

    Every edit records who made it (user, agent:Nimbus, mcp:claude-code) and can be undone. A fixed 60 Hz simulation with seeded randomness lets agents play the game, test it and replay it exactly.

    Simulation and time

  • A studio of agents

    Directors, designers, programmers, artists and playtesters with roles and budgets, a shared board, playtest bots that really play, feedback the director accepts or drops with measured effect, and loops you define.

    Studio and crews

What it renders

Neon avenue at night

Physically based, Apple-silicon fast

Clustered lighting for 1,000+ lights, screen-space GI and reflections, TAA and MetalFX upscaling, cascaded soft shadows.

 Clouds over a strategy map

Atmosphere and volumetric clouds

Physical sky scattering, ray-marched clouds with shadows, light shafts and height fog.

 Surf in the shallows

FFT ocean and shorelines

A simulated sea that shoals over the seabed, with foam, caustics, refraction and wet sand.

 Monastery valley with forests

Terrain and foliage at scale

Eroded terrain with splat layers, GPU-instanced foliage with wind, LODs and octahedral impostors.

 Strand hair

Strand hair and fur

Simulated strands with Marschner shading, physically based color and self-shadowing.

 GPU sparks

GPU particles and fluids

Millions of particles with depth collisions and sub-emitters; volumetric fire and smoke simulated on the GPU.

 A painted 2D level

2D, UI and dialogue

Sprites, tilemaps, 2D lights, SDF text, themed UI layouts and a branching dialogue language.

 A cinematic still

Movie renderer

Deterministic offline renders to HEVC, ProRes or PNG with real accumulated motion blur.

From words to native code

Behaviors pair a plain-language intent with Wander code: a deterministic language with states, coroutines, collections, modules and in-language tests, a node-graph view of the same code, and ahead-of-time compilation to native code.

behavior Coin
  intent "Spins; when the player touches it, it adds a point and disappears."
  param spin = 90 in 0..360 "degrees per second"
  on tick
    rotate self by (0, spin * dt, 0)
  end
  on trigger_enter "player"
    emit "score" with {points: 1}
    destroy self
  end

  test "spins"
    let before = self.rotation.y
    wait 0.5
    expect self.rotation.y != before
  end
end

entity_create {"name": "Coin", "mesh": "torus", "position": [0, 1, 0], "color": "#f5c542"}
physics_add {"entity": "Coin", "preset": "trigger_zone"}
wander_check {"source": "on tick\n  rotate self by (0, 90 * dt, 0)\nend"}
viewport_capture {"annotate": true}

skywalker render examples/hello_sky/scenes/main.sky.json -o shot.png --annotate
skywalker run examples/hello_sky/scenes/main.sky.json --ticks 600
skywalker build --project examples/sky_dash --out ~/Builds --release

skywalker setup claude     # or codex | gemini | cursor | all

Made with Skywalker

Tidebreak Isle

Tidebreak Isle

Open-world island adventure

An island cove at golden hour with FFT surf, palms, a fort and a brig.

 Neon Requiem

Neon Requiem

Neo-noir RPG

A rain-soaked neon city lit by hundreds of clustered lights.

 Berrybrook

Berrybrook

Cozy farming sim

A berry farm with planting, harvest and a tilt-shift lens.

 Meridian Accord

Meridian Accord

Grand strategy

A strategy map with fronts, units, map modes and events.

All 24 example projects Showcase

Start here

I want to… Go to
Build the engine and open the editor Install and build
Make a small game end to end Your first game in 15 minutes
Let Claude Code, Codex, Gemini CLI or Cursor build with me Connect an AI agent
Learn a subsystem in depth Manual
Look up a tool, component, builtin or CLI flag Reference

Developed by AmirHossein (Amir) Razlighi · Source available under the Business Source License 1.1, free for individuals, small companies, non-profits and education.