Como Construí um Jogo de Corrida Cyberpunk com Gemini Live AI — e o que aprendi no caminho

The article details building 'First Runner,' a cyberpunk fitness game where players conquer real-world city territories by running, walking, or cycling, guided by a real-time AI voice coach called Oráculo powered by Gemini 2.5 Flash Native Audio. The architecture streams raw PCM 16kHz audio from a Flutter app via WebSocket to a Node.js server on Google Cloud Run, maintaining a bidirectional session with the Gemini Live API for sub-second voice responses. Territory ownership, rankings, and clan data are managed through Firebase Firestore, turning city streets into a competitive game board.