Build a cross-platform idle tycoon that lets players start with a single pizza oven and grow into a full-scale restaurant empire. The game must deliver true idle mechanics—offline earnings, automated production chains, and meaningful upgrades—while presenting everything in a realistic, richly detailed art style. Stainless-steel equipment, authentic dough-stretching animations, and warm dining-room lighting should make each new section feel alive rather than cartoonish. Scope The project spans concept to store-ready release on iOS, Android, and Windows PC. A single codebase should support both touch and mouse control schemes, maintain 60 fps on mid-range phones, and export cleanly to desktop. Expect to implement: • Progressive economy that rewards resource management, kitchen equipment tiers, staff hiring and training, and area unlocks. • Offline profit calculations that resume accurately after any length of inactivity. • Intuitive UI/UX that scales from phone portrait to 1080p desktop. • Optional ad and IAP monetisation hooks, plus basic analytics and cloud save. • Modular data sets (spreadsheet or ScriptableObject) so balancing can continue post-launch. Tools Unity or Unreal are both fine as long as the final build meets performance and store requirements. Purchased or custom 3D assets are acceptable, but licences must cover full commercial use. Deliverables 1. Playable MVP on TestFlight, Android APK, and Windows EXE. 2. All project source with organised folder structure and commented code. 3. Economy and balance files ready for quick tuning. 4. Tutorial, settings panel, and localisation stubs (English default). 5. Two-week post-launch support for hotfixes. Acceptance criteria: idle income persists after force-closing, upgrades change production visibly and numerically, no progression blockers within the first ten in-game hours, and all builds pass platform compliance checks without critical warnings.