Hello ben, thanks for playing. I tried to tell the rules in the tutorial, but maybe too many words to read which make you confuse about the closing area rule? Is it better to add a static rule instruction to read for you?
Yes, it's a little finnicky to rotate when you drag the tiles, I will add a rotate key, I will update it in few days(the project is still in development)
Thanks for the advice and thank you for loving this game.