4:33 you don't need the best PC, monitor and keyboard/mouse/sayo device to beat really hard levels you will only really notice the benefit of them if you're beating high end extreme demons (except maybe playing on mobile because I would say that playing on mobile does make the game significantly harder). To beat extreme demons all you need to do is to be determined and to put in the grind, like it took me 850 hours of playing the game to beat my first extreme.