I want to bring a full-scale “CRMP” experience to mobile, so the game has to feel as lively and flexible as titles such as RP Grand Mobile—but run smoothly on both Android and iOS. Multiplayer functionality, an open-world environment, and deep role-play systems are the three pillars of the project. You will take the idea from first prototype all the way to App Store and Google Play release, including the server back-end that keeps sessions persistent and handles everything from chat to economy. I’m open to your preferred stack—Unity, Unreal, or a custom engine—as long as the end result delivers a stable, cheat-resistant experience and can be updated over time. Key deliverables • Detailed game design document that captures mechanics and progression • Playable vertical slice for early testing on real devices (Android & iOS) • Scalable multiplayer server with admin tools and basic anti-cheat • Full open-world map populated with interactive locations and NPCs • Core RP systems (character creation, inventory, jobs, housing, vehicles, voice/text chat) • Optimised final build, ready for store submission, plus source code and deployment guides Acceptance criteria • Consistent performance on mid-range phones (30 FPS or better) • Seamless cross-platform play between Android and iOS • No critical crashes after 100 hours of QA stress testing • All RP features available in the launch build and functioning as documented If this sounds like a challenge you can meet, tell me briefly how you would approach networking, map streaming, and long-term content updates, and share links to any comparable projects you have shipped.