Cross-platform mobile arcade game (iOS, Android, Web) built with React Native, Expo, and TypeScript. Developed end-to-end: a real-time game engine (game loop, collision detection, levels, and progressive speed-up), an animated UI (gradient snake, glowing food, light/dark theme), and an offline-first local backend — scores, leaderboard, and profiles persisted on-device. Multiple controls: keyboard, swipe, D-pad, and haptic feedback. Clean, fully typed TypeScript architecture, ready for optional cloud sync (Supabase).