Do you mean Robot Odyssey: https://slate.com/technology/2014/01/robot-odyssey-the-hardest-computer-game-of-all-time.html https://slate.com/technology/2014/01/ro

Do you mean Robot Odyssey: https://slate.com/technology/2014/01/robot-odyssey-the-hardest-computer-game-of-all-time.html https://slate.com/technology/2014/01/robot-odyssey-the-harde... ? As for your idea, Zachtronics had one for a while, but it was flash, so I don’t know if it still exists.