Everyone knows the Uno. Children love it and sometimes the parents fly for evenings with friends. The "extreme uno" adds spice with new maps and especially the machine that sends random maps instead of "pick" (between 0 and 7 cards!). Only flat, it is difficult to remove the plastic cartridge to place the cards from the deck. It takes each time a little force to open which could limit his life expectancy. Fits hassle for children from 5 years. My children are 6 and 10 years ...