# The brownies

- **Event:** [Gemini 3 NYC Hackathon](https://cerebralvalley.ai/e/gemini-3-nyc-hackathon)
- **When:** Sat, Feb 28 at 9:00 AM – 9:00 PM (EST)
- **Where:** The Malin Flatiron, New York, NY
- **Team:** [Abhi Prajapati](https://cerebralvalley.ai/u/abpraj), [A Khazanchi](https://cerebralvalley.ai/u/avikhazzzz), [Nevasini Sasikumar](https://cerebralvalley.ai/u/nevasini), [Hrithik Shah](https://cerebralvalley.ai/u/hrithik)
- **GitHub:** https://github.com/abhi-praj/gemini-hackathon
- **Demo video:** https://www.loom.com/share/b34b4ac0e63d4984b5744bfb1d57d828
- **Gallery:** https://cerebralvalley.ai/e/gemini-3-nyc-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/gemini-3-nyc-hackathon/hackathon/gallery/36

Willowbrook is a generative AI simulation where autonomous agents inhabit a living, breathingt town. Powered by Gemini 2.5 Flash, each agent possesses persistent memory, emotional states, social relationships, and daily plans — forming opinions, forging friendships, and evolving over time. Players observe and intervene: chat with residents using natural voice (speech-to-text input, per-character TTS output with mood-inflected delivery), whisper inner-voice commands, or simply watch emergent narratives unfold. A reflection engine synthesizes experiences into higher-order insights, while a social graph tracks relationship dynamics across every interaction. Part sandbox, part social experiment — Willowbrook asks: what happens when AI characters truly  remember?

---

Markdown version of https://cerebralvalley.ai/e/gemini-3-nyc-hackathon/hackathon/gallery/36. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt