Super unique concept! I wish I knew more about Mahjong, but once I knew the hand size matched the width of the screen, enough things started to make sense for me to enjoy it. Some sounds and a hand helper UI on the side bar would bring this game to another level. I really hope you continue with this idea, it could be very fun and addictive and catch on! Also never thought I'd see a Godot Scheme pipeline. Amazing tech work!