The whole complexity of this unique card game only passed down by masters of the card game craft is very fine. Only true masters of UNO can understand how to play this game, outsmart their enemies, and overrall win over a million dollars in UNO championships all across the world. The world can not fully grasp this game because it is simply to unique for this world to handle. Many people have tried to and failed and it has resulted in them experiencing a sense of failure like no one has imagined. At your own risk, install this game and play it only if you have prior knowledge in real life. Playing this game without prior knowledge is like hanging yourself. You might do good, but a small sliver of the population will. I, myself, am a complete master at this game which has fully grasped all the fundamentals of UNO.