I'd like to suggest 2 games to perhaps get the young interested in,
1. I have nieces that don't have a clue about our side of the family. I only see them once a year and I don't know very much about their likes and dislikes.
What I did was wrote questions on pieces of paper put it in a see through container and had a prize, they pulled and answered a question, a candy of their choice to win until the last question. Also throw in some questions about family history. First prize was MONEY. The rules are.
You could ask your helper only, that's a member of the family they chose and felt KNEW STUFF. The helper could only help answer the question and not give more informaion. The child then gave the answer out loud. Some questions are hard but a lot of them were very easy. They could not ask their parent to be the helper.
Next you as an adult cannot imagine what a child/teenager will, see is going on at a reunion. Many of them think it's just a big party. Buy throwaway cameras. Give each child 1. Let them know it can only be used for activities at the reunion. Pick a picture taking day. Once they take the last picture--that's it, no matter how many days or left. Camera's will be going on sale for the holidays. The committee should keep money aside for developing. Whoever else who wants to use their digital camera, for their own personal collection is welcomed. But the throwaway camera's are about the children. Now the committee should keep this a secret until the contest starts because you know family will run out and buy another camera so they can keep going. PUT THE NAME OF THE CHILD ON EACH CAMERA. At the end of the reunion, develop the pictures and email it to anyone who wants copies. BUT they must be throwaway cameras, no digitals. It will be fun to see what they see.
Here's something I found out--they thought a cousin was a auntie or uncle because we are OLD NOT SO!!