# DayDreamer

- **Event:** [Gemini 3 ハッカソン 東京](https://cerebralvalley.ai/e/gemini-3-tokyo-hackathon)
- **When:** Sat, Feb 21 at 9:00 AM – 10:00 PM (GMT+9)
- **Where:** 東京都渋谷区渋谷 3 丁目 21 - 3 渋谷ストリーム 5F
- **Team:** [Qing Zhang](https://cerebralvalley.ai/u/qzkiyoshi), [Chenrui Ma](https://cerebralvalley.ai/u/Rui)
- **GitHub:** https://github.com/MaChenrui/NewPrj
- **Demo video:** https://youtu.be/VJED-sABoOQ
- **Gallery:** https://cerebralvalley.ai/e/gemini-3-tokyo-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/gemini-3-tokyo-hackathon/hackathon/gallery/56

Reality Weaver is a mobile web app that turns the world in front of your phone into an AI-generated story: you point the camera at your surroundings, and every few seconds a frame is sent to Gemini 2.5 Flash (image + text). The model returns one short sentence in English and Japanese, which appears on screen with a typewriter effect and builds a live, bilingual “novel” that follows your theme (e.g. cyberpunk, Lovecraftian horror, or Japanese magic realism). You move through real spaces while the narrative evolves from what the camera sees; when you’re done, you tap “End & generate novel” and Gemini writes a final chapter and title from the collected fragments. Built with HTML, vanilla JS, and Tailwind, and designed for portrait fullscreen on iPhone/Android over HTTPS (e.g. via Cloudflare Tunnel), Reality Weaver is a Gemini-powered, camera-as-input narrative game for a hackathon: no controller, just you, your environment, and an AI co-author.

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Markdown version of https://cerebralvalley.ai/e/gemini-3-tokyo-hackathon/hackathon/gallery/56. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt