We really love this game.  We played it at our local library and decided we needed to buy it for ourselves.  It's a lot of fun, it's a great way to get your brain thinking about different ways to play your tiles.  My son (5yo) is the one who plays the most and when we do, we usually forgo the scoring system and we don't hide our tiles and play it in a more cooperative manner so he can develop some more strategies.  Eventually, we will add in the scoring system.  Lots of fun, love it!!!