A great game 3 1

One of my favorite board games. It is a bit complicated for people who do not usually games - in general - but once well understood rules, it is a rich and impressive fluidity. Everyone plays at the same time, we do not get bored and interactions with its neighbors are numerous. In addition, some taking place in less than an hour, we immediately tried to replay another to test a new approach.
The only flaws: the cards get tired pretty quickly - invest in protection? and more than 3 players, we realize we can only block a difficult opponent out of the immediate vicinity. A little frustrating.