Fullscreen or not, as you prefer. With fullscreen it can lags but not so much, second or two... you can play with lag, nothing will bad. All instructions in game. Controlling tutorial: Right arrow key -> next page. Do it when you finish the current page. Click on text-> close the tutorial. t-> open the tutorial Try to collect 24 species of dragons! Update 07.11.2015 Eggs in more colors, I finally discovered how to do this XD