Planned Release Date: April 2026

About This Game

An AI assistant that lives on your desktop. 100% local, no internet required.

What It Does

CielChan sits on your screen and interacts with you throughout your day:

• Chat via text or voice — Speak or type, she responds with speech

• Remembers conversations — Builds familiarity over time, recalls past interactions

• Observes your activity — Makes occasional comments about what you're doing

• Responds to stream chat — Reads and replies to Twitch, YouTube, and TikTok chat in real time

• Reads books aloud — Load TXT and EPUB files, she'll read them to you

• Online multiplayer — Join lobbies where multiple CielChans can meet and talk to each other

Key Features

✅ 100% Offline — Runs entirely on your PC, no internet required after download

✅ Voice Input & Speech — Talk to her, she talks back

✅ Persistent Memory — Remembers past conversations

✅ Animated Avatar — Breathing, gestures, lip sync, expressions

✅ Stream Integration — Responds to Twitch/TikTok chat

✅ Book Reader — Reads TXT and EPUB files aloud

✅ Online Multiplayer — Join lobbies with other CielChan users

✅ System Audio Awareness — Reacts to music, games, and videos playing on your PC

✅ Custom AI Models — Swap the bundled LLM for any GGUF-format model

✅ VRM Avatar Swap — Replace Ciel with any VRM model from VRoidStudio

✅ Personality Customization — Define her behavior: cheerful, professional, sarcastic, etc.

✅ 9 Languages — English, Spanish, French, Japanese, Chinese, and more

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Privacy

• Runs entirely on your PC

• No data sent to external servers

• Conversations stored locally

• Voice data never leaves your machine

• Verify with Wireshark or firewall logs

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Why It's 2.4 GB

Includes everything needed to run offline:

• Bundled AI model

• All voice synthesis engines

• Full Unity runtime

No messy setup works out the box. No API keys. No accounts required.

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One-Time Purchase

• Pay once. No subscription.

• Yours forever.

• Works entirely offline — will continue functioning even if the developer disappears.

AI Generated Content Disclosure

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

CielChan uses generative AI to create real-time conversation responses and voice synthesis. When you chat with CielChan, a local AI model generates her text responses, and bundled TTS engines convert those responses to speech. All AI processing happens entirely on your PC — no data is sent to external servers, and no internet connection is required after download. The AI model, voice synthesis, and all assets are included in the download. CielChan works offline forever, even if the developer disappears.