Progressive Jackpot Slot Game Build

I need a complete online slot game—front end for players and a full-featured back office so I can manage everything in one place. The game itself must be a classic slot experience with a standout progressive jackpot feature that grows in real time and pays automatically when it hits... (Budget: $250 - $750 USD, Jobs: Database Management, Game Design, Game Development, HTML, JavaScript, PHP, UI / User Interface, Web Development)