As a quick introduction, UNO is a great game for the whole family and the objective of the game is to get rid of all the cards in your hands. It is very good for learning colours and numbers.
Pros: An educational and fun game that is very affordable. A very easy game for children to understand and play for endless hours.
Cons: The cards are fairly durable but since it is cheap there is no such thing as just buying a few replacement cards. Hence usually we just buy more sets for more people to take part in the game. The box holding the cards is not lasting at all. My box is already torn thus now we keep all the cards in a plastic container. Even though it is stated that the game is for 5 years and up, but the cards are too big for my niece who is 6 years old to hold, especially when she is stuck with lots of cards!!
Additional thoughts: Maybe they can built racks (like those in scrabble set) to hold the cards for younger children.