I don't know if anyone else has discovered this card game, but I bought it about 3 Christmases ago as a game for the family to play - that's me, husband, two sons plus wives, 3 grandchildren aged 9, 12, 14.
It has been the most popular game, particularly with the grandchildren, I can remember. They still clamour to play it, and my son's stepson aged 19 also loves playing it.
Basically you try and blow your opponents up by tactics, joining forces with other players, and sometimes just cheating! It's huge fun with just a pack of cards and I can really recommend it for this age group - but don't get the adult version!
Has anyone got any other more unusual games that they've found for all the family to enjoy?