Donkey Shit rivals

Given how addictive the games are, I am not surprised to learn how DS managed to outsold its rivals. They have games that are not only made for hardgamers because they always have the this concept where every one should be able to enjoy the games too. Perhaps this strategy had finally paid off? Better target a large portion of the population rather than focusing small group right? Even grandfathers play DS. How not to outsold its rivals liddat?