We purchased this for my in-laws for Christmas this year and played with my father-in-law, step-mother-in-law, brother-in-law (11), and sister-in-law (13).  Everyone LOVED it.  The game was quick to pick up and start playing as the rules are not too complicated. As we played more it remained challenging as we all started to develop more strategy.  Played with 6 people and the games usually averaged 30 minutes - about the perfect time.