I got my 6 year old son this for his Christmas, and being a lego fan, he loves it. First you build the 3 lego robot models, one each in blue, red and green. Some fiddly work here. Then you take them apart as far as a head, two arms, two legs and a body. You place the parts in the middle - called the scrapheap - and roll the dice to start to build your robot. Each player starts with a body. The coloured faces on the dice determine what you can do. The first person to build a complete robot wins the game. Great fun.