family gatherings are meant to relax and enjoy.I always prefer to include all fun activities which involve interactions as well. Infact I have mentioned few games, in one of my hub ( http://hub.me/ajHX6 ) , which we play in family gatherings and are enjoyed by all of us.
Qualifying myself I did not raise children. However, with sis's and bro's children I participated mainly with their children as kids. Even when not as a family game it was usually Shoots and Ladders. Maybe I was being taught as much as my nephew or niece.
Card games were more as a family event. Ex: Go Fish or Spoons. The card games tended to be with all of us. That grew from those onward to games like Hearts and Spades.