My sister-in-law bought this game as a vacation gift for my 3.5 year-old son.  What a great idea for a gift, and it has turned out to be great fun for the family.  I don't really remember playing this as a kid, probably because kids outgrow this game by the time they're five, but after playing it for a couple weeks, it is easy to see why it has been a classic for 50 years.  It takes about ten seconds to understand the rules, and only slightly longer to explain it to a kid.  Like most pre-schoolers, my son doesn't like to lose, and he doesn't love to share or take turns, but I have to say it's remarkable how well he does with all of those skills while playing this game.  I'll let you in on a little secret why...