I developed the complete game logic for "Yhteispeli," an interactive art installation by Grönlund-Nisunen, featured at g-n.fi. This project transforms building spaces into a dynamic, color-theory-inspired game, where students engage with 21 distributed touchscreens. My work involved programming the core interactive "catch the light" game mechanics, where successful user interaction on one screen activates another in a chain, progressing through increasingly faster levels. A critical focus of my development was ensuring the system's robustness and fault tolerance: the game logic, implemented in C++ on ESP32 microcontrollers for the touchscreens and Python for controlling large circular displays, was designed to maintain stability and functionality even in the event of message loss or individual device failures. This ensured a continuous and reliable interactive experience for the participants.