Learn to build an Arduino-based "Mastermind" electronic puzzle game for escape rooms. Follow step-by-step instructions to create a challenging game where players guess a secret code using visual feedback from a Neopixel LED Ring. Explore the wiring process, Arduino programming, and integration with Node-RED escape room control software. Discover how to implement JSON data packets for real-time game state monitoring and enhance player experience with automated lock mechanisms. Gain valuable insights into escape room technology and puzzle design through this comprehensive tutorial.