Title: Build Real Money Number Wheel Betting App (0–9 Spin Game) Description: I want to build a real-money number betting app based on a spinning wheel system. This is not a traditional bingo game. It is a 0–9 number wheel game where users place bets on a number and one number is selected randomly each round. Game Logic (Important) A spinning wheel containing numbers 0 to 9 Each round, only one number is selected Users can bet on any number from 0 to 9 Example: User bets ₹100 on number 5 If 5 wins → user gets ₹900 If not → user loses ₹100 Each round duration: 15–30 seconds Auto spin and automatic result system Random number generation must be server-side Core Features 1. Game System Smooth spinning wheel animation Countdown timer before each round Auto result generation Server-controlled randomness 2. User System Login/signup using mobile OTP Wallet system (deposit, balance, deductions) Bet history and result tracking 3. Payment System UPI deposit Withdrawal system (admin approval) Full transaction logs 4. Admin Panel Control game rounds Set payout ratio Monitor all bets in real-time User management Approve/reject withdrawals Full logs of transactions Security Requirements All game logic must be on server (no client control) Secure APIs Proper wallet ledger system Protection against manipulation Tech Stack (Suggested) Frontend: Flutter or React Native Backend: Node.js or Laravel Database: MySQL / MongoDB / Firebase When Applying Share similar past work (betting or gaming apps) Explain how you will handle randomness securely Provide timeline and cost