Gemini-Guess: Q.Z.L Corp. Joins the Gemini 3 Hackathon

Gemini-Guess: Our Hackathon MVP for the Gemini 3 Hackathon

We’re excited to announce that Q.Z.L Corp. is joining the Gemini 3 Hackathon with our project Gemini-Guess!
You can also see our preview on Devpost here: https://devpost.com/software/gemini-guess.

What is Gemini-Guess?

Gemini-Guess is an open-ended game where players challenge Gemini 3 to guess any idea, object, or concept. Players can give clues via text, voice, or video, and Gemini 3 responds with deep, multi-turn reasoning, showing its thought process step by step.

It’s designed to test curiosity, creativity, and AI reasoning in a fun and interactive way.

Inspiration

The idea came from how much people, especially kids, love guessing games. We wanted to explore how far AI can reason in open-ended scenarios. Gemini 3’s deep reasoning capabilities made it the perfect choice for this experiment.

What it does

Players think of any concept, object, or idea — or say/show it visually.

Gemini 3 tries to guess it through multi-turn reasoning.

Tracks rounds, scores, and allows replay of the AI’s thought process.

Supports text, voice, and video input for natural interactions.

Try it here: Gemini-Guess MVP

How we built it

Next.js for the frontend — fast for hackathon prototyping.

Gemini 3 API powers reasoning and multi-turn guesses.

Web APIs handle microphone and camera input for voice/video clues.

Game state stored in memory, ready for leaderboards in the future.

Replays visualized and available with audio for judges and players.

Challenges we ran into

Designing prompts that handle unlimited concepts.

Handling voice and video input with low latency.

Keeping the game fun but fair, letting AI sometimes fail in interesting ways.

Managing multi-turn reasoning in a concise replayable format.

Accomplishments

Showcased Gemini 3’s reasoning depth and nuance.

Created a replayable AI thought process for users and judges.

Supported multimodal input (text, voice, video) in a single app.

Made an interactive experience that’s accessible for everyone.

What we learned

Gemini 3 can handle deep, multi-turn reasoning across open-ended challenges.

Multimodal input makes AI interaction more natural.

Prompt design is both an art and a science.

Watching AI think in real time is as fun as playing the game.

Next Steps for Gemini-Guess

Add leaderboards and global scoring.

Expand video/voice AI interaction, possibly live-stream challenges.

Optimize prompts for faster AI guesses without losing nuance.

Build a mobile-friendly React Native version for on-the-go play.

We can’t wait for everyone to try it and see how far Gemini 3 can go in guessing your ideas. Check it out here: https://gemini-guess.qz-l.com/

Stay tuned for updates as we improve the game during the hackathon!