You've certainly seen the program. In the US its called Family Feud, in the UK its Family Fortunes, but the format is the same. Two families play against each other. The questions are not necessarily difficult but can be tricky.
Game Show Fundraiser Ideas - Doing a game show fundraiser is an easy and fun way to raise funds. Choose a classic game show such as Family Feud or The Price Is Right and use it as the centerpiece for a fun fundraising event.