Coloretto was very simple to learn – by the time we had played two turns of our first game we understood the basic gameplay mechanics and also the strategy required to win.
However, winning requires a combination of the right colour cards appearing, and you being in a position to collect them, and forcing other players to collect cards they do not want to reduce their scores. This is where the replay value comes from – the game will never play out the same way twice.
It says 13+ on the box, but our 6 year old played it and was able to understand the rules and strategy with a minimum of guidance.
Recommended by all of us who played it.