Choose Your Own Destiny

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  A Roman General lead his army to quell gladiator rebellion at colloseum.

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  A Chinese prince on a voyage aboard a galley toward south china see. Across ocean to find his bride. On the way he will meet with pirates.

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  A Roman General lead his army to subdue a rebellion on capital hill. The tribune raising mob anger and start to destroy the capitol.

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  A time-traveling samurai in a 1980s neon-synthwave London. He is searching for a stolen steam-powered compass while being chased by police.

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  Diagram

Inspiration

• Childhood Nostalgia: I grew up loving "Choose Your Own Adventure" detective books. I loved being the one to decide the story's ending.
• Beating Writer's Block: While trying to write my own book, I got stuck. I realized that an interactive tool could help writers spark new ideas and get past mental walls.
• Gemini Technology: Playing with Gemini GEMS showed me that AI could act as a creative partner, not just a search engine.

What it does

• **Step 1: Logic Check: When the player makes a choice, the World State Manager checks the database to make sure it's possible (e.g., you can't use a key you haven't found).
• **Step 2: Storytelling: The Creative Director (Gemini) writes a vivid paragraph and hidden "visual tags" for the scene.
• **Step 3: Data Mapping: The Lore Orchestrator pulls out those tags and saves the characters, items, and settings into a SQLite database.
• **Step 4: Cinematic Direction: The Visual Refiner reads the story and picks a dynamic camera angle (like a "Dutch Angle" or "Wide Shot").
• **Step 5: Visual Creation: The Cinematographer (Imagen) uses all that data to paint a consistent, high-quality image that matches the story perfectly.

How we built it

• The "Film Studio" Model: I didn't just use one AI. I built a team of "agents" that work like a movie crew:
  • The Director: Writes the actual story paragraphs.
  • The Casting Agent: Makes sure the main character looks the same in every chapter.
  • The Props Manager: Keeps track of items (like a compass or a sword) so they don't disappear.
  • The Camera Op: Takes the story and turns it into a cinematic image with cool angles.
• The Memory Bank: I used a SQLite database so the AI never "forgets" what happened in earlier chapters.

Challenges we ran into

• **At first, the AI only made simple, centered pictures. I had to teach it to use "cinematic" angles (like wide shots or low angles) to make it feel like a movie.
• **Sometimes the AI would try to use an item the character didn't have. I had to build a World State Manager to double-check the logic of every choice.
• **Some battle scenes would get blocked by the AI. I had to learn to describe action in an "artistic" way so the system wouldn't crash. ## Accomplishments that we're proud of

What we learned

• **Writing a good story is about more than just being "creative." It requires a lot of organization and structure.
• **I learned that AI works best when you give it small, specific jobs instead of asking it to do everything at once.
• **I had to figure out how to use high-end models (like Gemini 3.1 Pro) for the finale while using faster, cheaper models (like Gemini 3 Flash) for the rest to keep costs down.

What's next for Choose Your Own Destiny

-**I'm planning to improve it

Built With

• adk
• fastapi
• gemini
• google-ai-sdk
• google-context-catching
• python
• react-19
• sqlite
• tailwind-css
• typescript
• vertex-ai