This has quickly become a family favorite!  I would call it a mix between sudoku and dominos where you have to match colors and/or shapes without repeating any color or shape in a row.  If you're lucky enough to get all 6 of either a shape or color in one turn,  you get the maximum points which is called a "Qwirkle".  There is a lot of strategy involved and you have to look in all directions to make sure you are getting the most points possible.  A couple of times we've noticed that someone had actually repeated a shape or color and no one noticed for a couple of turns which was quite funny, but we kept on and finished anyway.  There are 6 shapes and 6 colors with 3 of every tile so the possibilities are endless!!  It takes about 20-30 minutes to play depending on how fast or slow some of the players are, so it doesn't take forever.  We've found even some young kids are able to pick up on this although they might need a little bit of assistance.  Great family game!