I've always loved two things: reading gamebooks — those "choose your own adventure" novels where every decision shapes the story — and building software. Collabook was born at the intersection of both. But there's a third ingredient: I built this entire project using vibe coding — letting an LLM guide and accelerate the development process, with Google's Antigravity framework under the hood. It was as much an experiment in how to build as in what to build. Spoiler: it works, and it's a lot of fun. The idea was simple: what if a classic gamebook had no fixed ending, no author bottleneck — just an AI Dungeon Master, a ticking clock, and other real players crossing your path? So I built exactly that: ⏳ Time-limited adventures — survive the AI's challenges before the clock runs out 🤝 Organic multiplayer — the AI weaves other players from the same world into your story 📄 Exportable PDF — your adventure becomes a real book you can keep 🔓 Fully open-source, privacy-first, no paywalls

Collabook

AI-powered collaborative RPG — your story, your legend

AI-powered collaborative RPG — your story, your legend