I am sorry Alexxx888, I was a little tired when I saw your comment. No there isn't such a rule, but, it is called common courtesy. We all have gripes with dev, some valid and some just mean. In either case, these devs put their all into these games, a whole lot of time, and some spend quite a bit of money, to produce a game that they offer to us players for free for the most part. A lot of players who are not happy with how a game is going will just verbally assault a dev as if the player was financing the whole game out of his pocket. I'm not saying you did this, but, in my tired state, that's how I took it. If unhappy, be polite about it, it would be less stressful on you and the dev. Personally, if I was a dev, I would shun anybody who I even thought was attacking me, but, that's just me. Devs are people too, and have feelings as well. Most devs welcome comments good and not so good as long as they are done in a respectful way. Wouldn't you want that if you were a dev?