🎥 Video Demo: https://youtu.be/imMa8FMHlck

Try it yourself — click a preset like "Messi vs Ronaldo," hit Generate Commentary, then hit "Listen to Column" to hear it out loud.

How I Built It

The app is built with React + TypeScript + Vite + Tailwind CSS, deployed on Google Cloud Run.

Gemini 2.0 Flash powers the core hype generation — I engineered the prompt to keep responses playful, biased toward the chosen side, and dramatically "shouted into a stadium mic" rather than neutral or robotic. Getting the tone right took a few iterations of prompt tweaking.

ElevenLabs handles the text-to-speech layer — the generated commentary is sent to ElevenLabs' API and played back in-browser as a stadium-announcer voice, turning static text into something that actually feels alive.

One fun challenge: I hit Gemini's free-tier rate limit mid-build and had to switch API keys/projects to keep testing — a good reminder that even small demo apps need quota planning. I also had a UI bug where longer names like "Cristiano Ronaldo" were clipping on smaller screens, fixed with responsive flex layouts and dynamic font scaling.

Prize Categories

Submitting for:

• 🏆 Best Use of Google AI — Gemini 2.0 Flash generates all commentary in real time with custom prompt engineering for tone and bias


• 🏆 Best Use of ElevenLabs — Real-time text-to-speech converts generated commentary into an actual audible stadium-announcer moment

Thanks for putting together another fun challenge — built this solo over the weekend! Would love to hear what rivalry you'd want to see hyped up next 🔥

weekendchallenge