This was awesome! I like this kind of puzzle! I'll give some feedback based only on my experience. It is easy to understand, but maybe it was just me: I was expecting that I could get points even after placing the tiles. For example, I was expecting that if I placed a port, all the water tiles I placed around it after that would give me points because of the port tile. It took me a while to understand that I only got points in the moment I placed the tiles. Maybe that's just me tho xD Great game! Keep up the good work ^^