1. Real-time Betting System: Users can place bets on each game, with their balance updating dynamically after each spin or play.
2. Three Popular Casino Games:
   • Slot Machine: A traditional 3-symbol slot game, offering a payout if all symbols match.
   • Roulette: Players can bet on a number (0-36) with a payout of 36 times the bet if they win.
   • Blackjack: A simple game where the user faces off against the dealer, and winnings are determined by who has the higher card.
3. User Balance Management: The user's balance is stored in the session and updated after each game. If a user wins, their balance increases; if they lose, their balance decreases.
4. Easy Integration: The backend is powered by PHP and works with session variables, which makes it easy to integrate into a larger casino platform.
5. Interactive Frontend: The frontend uses HTML, CSS, and JavaScript to create an engaging and interactive user experience. Buttons allow users to start the games, and results are displayed immediately.
6. Responsive Design: The layout adjusts to various screen sizes, ensuring the casino is playable on both desktop and mobile devices.
7. Modern UI: The design uses a dark, elegant color scheme, offering a professional and immersive casino feel.
8. Error Handling: The system checks for invalid bets, ensuring the user is informed if their bet is too large or invalid.
9. Scalable: The code can easily be expanded with more games or features, making it adaptable to different types of online casino platforms.

This system is ideal for online casinos looking to offer an engaging, user-friendly experience with classic games and real-time betting, all built on a secure and reliable PHP backend.