Cosmonaut AI

Describe any world - a noir mystery in 1940s Chicago, a space station hiding dark secrets, a magical kingdom on the edge of war - and Cosmonaut builds it into a branching story shaped entirely by your choices. ✨ HOW IT WORKS 1. Describe your story - set the genre, the setting, the mood. You set the stage, AI fills in the details. 2. Every choice branches - decisions create new paths. Write custom actions, explore unexpected directions. Your story grows with every tap. 3. See the whole picture - a visual story map shows every path through your narrative. Jump between branches, discover what-ifs, find the endings you missed. 🚀 KEY FEATURES • AI-Powered Storytelling - Describe any premise and watch a rich, branching narrative unfold in real time. Stories stream to your screen as they're written. • Your Choices Matter - Every decision opens a new path. Choose from AI-generated options or write your own custom actions to take the story anywhere you imagine. • Visual Story Map - See your entire story tree at a glance. Navigate between branches, track your exploration, and discover paths you haven't taken yet. • Audio Narration - Listen to your stories with high-quality AI voices. Choose from multiple narrators, adjust playback speed, and enjoy stories hands-free. • Share & Explore Together - Share your story worlds with friends and family. Create invite links, explore together, and see how others navigate the same story differently. • Beautiful Dark Theme - Designed for immersive reading with a premium space-themed interface that looks stunning on any device. • Content Controls - Choose vocabulary level and content filters to make stories appropriate for the whole family. Child, teen, and adult settings available. 📖 BUILT FOR FAMILIES Cosmonaut is designed to be enjoyed by readers of all ages. Set content filters and vocabulary levels to create age-appropriate adventures. Create stories together - each family member can explore different branches of the same world. 🎧 LISTEN ANYWHERE Generate high-quality audio narration for any story passage. Multiple AI voices to choose from, lock screen controls, and background playback - perfect for bedtime stories or on-the-go adventures. 🌟 FREE TO START Create stories and explore branching narratives with a free account. Upgrade to Explorer or Cosmonaut tiers for more worlds, more choices, and expanded features. Cosmonaut - where every choice creates a new world.