I already have a playable prototype of an educational endless runner for kids; the core loop—auto-run, jump, obstacles, and simple quiz moments—works fine, but it still feels like a prototype. I now want to transform it into a production-ready mobile release. Performance is the top concern. In-game lag and sluggish restarts appear after extended play, so the end goal is a rock-solid 60 fps that holds after long sessions and multiple resets on mid-range Android and iOS devices. Next comes architecture. The current code grew quickly and now shows its seams, especially around animation handling. I need it refactored into a clean, modular structure that’s easy to expand and maintain. The game’s feel also needs attention. Character movement must be snappy and visually smooth—every run, jump, and landing frame should read clearly, with no input delay. While doing that, we’ll replace the placeholder art with a bright, lightweight city backdrop: tiled ground, layered buildings, and coherent obstacle sprites that liven up the scene without harming performance. You’ll succeed when you can hand over: • A build that stays at 60 fps after 30 minutes of play and five consecutive restarts. • Refactored, well-documented code—particularly the animation pipeline—ready for future levels and characters. • Noticeably smoother, more responsive character control tied to revamped run, jump, fall, and interaction animations. • A cohesive city environment (ground, buildings, obstacles) integrated into the scene. • One test build uploaded to TestFlight or Google Play Internal for verification. If you excel in 2D mobile game optimization and write tidy, scalable code, let’s turn this prototype into something kids will love—and that we can keep expanding together.