Meet Luna, a lifelike AI companion who lives on your PC: talk by voice or text and she answers in her own voice, with 74 expressions and natural gestures, all on-device. Optionally, an AI assistant that supports MCP can direct her: lights, camera, outfits, dance, songs.

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About This Game

A Digital Human Who Listens, Understands, and Answers in Her Own Voice

Meet Luna, a lifelike digital human who lives right on your PC. Talk to her by voice or text — ask a question, share your day, tell a story — and she answers in the moment, in her own voice, with accurate lip-sync, 74 facial expressions and gestures that fit what she says. No scripts, no dialogue trees: every reply is generated live. Her language model and her voice run on your own graphics card, so your conversations stay on your PC — no subscription, no API keys.

Optional: Connect an AI Assistant (MCP)

AI Digital Human Lab has a built-in MCP server (Model Context Protocol, the open standard AI assistants use to work with apps). If you use an AI assistant that supports MCP, you can connect it, and it can see the scene and direct it: speak through her, set the lights and the camera, dress her, pose her, start a dance, and capture the moment. This is entirely optional: the game is complete without it, and you need nothing outside Steam to play.

  • Connect in seconds — click the robot button in the chat bar (or type /mcp bind), scan the QR code with your phone, and send one message to your agent. No API keys, no configuration files.

  • Your agent speaks as her — hand the conversation to your agent: your words go to it, and she answers with its words, lip-synced and with matching expressions. Switch back to her built-in AI anytime.

  • A director at your command — more than 40 tools: camera angles, studio lighting, the look of the picture, poses, motions, outfits, hairstyles, backdrops, face sculpting, and her voice, all just by asking.

  • She remembers you — your agent can tell her your name, what you like, and what is going on in your life, and she keeps it in mind in her own conversations too.

  • Photos, video, and live streams — ask for a picture, record a clip, or go live on YouTube; your agent can look at the screen to check the result.

  • On your PC or from the cloud — local agents connect right on this PC; cloud-based assistants reach your game through our secure relay. The game connects out, so nothing on your PC is opened to the internet.

  • You stay in control — one command issues a new key and locks out every agent using the old one, and the relay only passes messages through: it does not keep your conversations.

Key Features

  • Real-time AI conversation — open-ended dialogue by voice or text, answered aloud sentence by sentence

  • A performance that feels alive — 74 facial expressions, accurate lip-sync, and gestures chosen for each sentence; when you are quiet, she still moves, glances, and breathes

  • 10 voice languages, 31 interface languages — she speaks English, Chinese, Japanese, Korean, German, French, Spanish, Italian, Portuguese, and Russian; the interface follows your system language, with optional dual subtitles in your native language

  • Voices — nine built-in on-device voices, or voices you clone on your own PC

  • Face sculpting — detailed sliders, control points, and presets, plus skin tone and makeup; or let your agent shape her face from a portrait

  • Dance, pose, and move — a motion library of dances and idle moves, pose presets, and free posing; she can even learn a new dance from an MMD motion file and its song

  • Webcam mirror — your webcam drives her face and body in real time

  • Songs written for you — give her a theme and she writes and sings an original song with karaoke lyrics, or learns a song from your own music file

  • Studio camera and lighting — orbit freely, frame shots with camera presets, switch lighting moods, take photos, and record video in-game

  • High-fidelity digital humans — built with Unreal Engine 5: detailed skin, eyes, and simulated hair rendered in real time

You Choose Her Mind

Her intelligence is yours to configure. Run the built-in model directly on your PC — fully offline, completely private, with no subscription and no API keys required. Or, if you like, let an AI assistant that supports MCP take over. Switch whenever you like — and as models and updates improve, so does she: smarter, more natural, more alive.

Make Her Truly Yours

Choose Luna or Orion, change outfits and hairstyles, sculpt every feature of the face, give them the voice you like, and set the backdrop and the light — then watch the personality come through in every glance and gesture. Frame the perfect shot with the free camera and keep it as a photo or a video.

Made for creators, storytellers, AI tinkerers, and anyone curious about what it feels like when AI truly responds.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Some in-game assets, including character models and animations, were created with the assistance of AI tools during development. During play, the character's replies, voice and songs are generated live by AI: by models running on your PC by default, or by optional cloud models through our own service. Every player message and every reply passes a content filter.

Connects to 3rd-Party Service for AI Content Generation: On your PC: Qwen3-1.7B (chat), Qwen3-TTS (voice), ACE-Step (music). Optional Cloud mode (credits): OpenAI GPT-4.1 mini, Google Gemini, xAI Grok, ElevenLabs voices.

System Requirements

Windows
macOS
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 / 11 64-bit
    • Processor: Intel Core i5-10400 / AMD Ryzen 5 3600 (6 cores, AVX2)
    • Memory: 16 GB RAM
    • Graphics: NVIDIA GeForce RTX 2060 / RTX 3050 or equivalent, 6 GB VRAM
    • DirectX: Version 12
    • Storage: 20 GB available space
    • Sound Card: DirectX compatible sound card
    • VR Support: Not required
    • Additional Notes: The game uses about 10 GB of memory while loading: on a 16 GB PC, close your browser and other programs first. SSD recommended. Local AI models run fully offline; internet is needed only for optional cloud AI.
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 11 64-bit
    • Processor: Intel Core i7-12700 / AMD Ryzen 7 5800X
    • Memory: 32 GB RAM
    • Graphics: NVIDIA GeForce RTX 3060 12 GB / RTX 4060 Ti or better, 8 GB+ VRAM
    • DirectX: Version 12
    • Storage: 25 GB available space
    • Sound Card: DirectX compatible sound card
    • VR Support: Not required
    • Additional Notes: SSD. A faster CPU and more video memory speed up local AI replies and voice.
    Minimum:
    • Requires an Apple processor
    • OS: macOS 14 Sonoma or later
    • Processor: Apple M1 or later (Apple silicon only; Intel Macs are not supported)
    • Memory: 16 GB RAM
    • Graphics: Apple silicon GPU (Metal 3)
    • Storage: 20 GB available space
    • Sound Card: Built-in audio; a microphone for voice chat
    • Additional Notes: Local AI models run fully offline on Apple silicon — internet connection required only for optional cloud agents
    Recommended:
    • Requires an Apple processor
    • OS: macOS 15 Sequoia or later
    • Processor: Apple M2 Pro / M3 / M4 or newer
    • Memory: 24 GB RAM
    • Graphics: Apple silicon GPU (M2 Pro or newer)
    • Storage: 25 GB available space
    • Sound Card: Built-in audio
    • Additional Notes: More unified memory and a faster chip speed up local AI replies and voice
    Minimum:
    • OS: SteamOS 3.6 or later (Steam Deck) / 64-bit Linux, e.g. Ubuntu 22.04 or newer
    • Processor: Steam Deck APU / Intel Core i5-10400 / AMD Ryzen 5 3600 (x86-64 with AVX2)
    • Memory: 16 GB RAM
    • Graphics: Steam Deck / Vulkan 1.3 GPU with 6 GB VRAM: NVIDIA GeForce RTX 2060 / RTX 3050, AMD Radeon RX 6600 (Mesa 23+ or NVIDIA 535+)
    • Storage: 20 GB available space
    • Sound Card: PipeWire or PulseAudio; a microphone for voice chat
    • VR Support: Not required
    • Additional Notes: Native Vulkan build, Steam Deck supported. The game uses about 10 GB of memory while loading: close other programs first. Local AI models run fully offline; internet is needed only for optional cloud AI.
    Recommended:
    • OS: SteamOS 3.7 or later / Ubuntu 24.04 64-bit or newer
    • Processor: Intel Core i7-12700 / AMD Ryzen 7 5800X
    • Memory: 32 GB RAM
    • Graphics: NVIDIA GeForce RTX 3060 12 GB / AMD Radeon RX 6700 XT (Vulkan 1.3)
    • Storage: 25 GB available space
    • Sound Card: PipeWire or PulseAudio
    • VR Support: Not required
    • Additional Notes: A faster CPU improves local AI response speed; SSD recommended