Answer - Both! Any of the games above are suitable for both groups or as a one-on-one bonding experience between you and your grandchild. You can be the leader and instruct a group of kids what to do, or you can join in and play along with them. Take the I SPY game for example - you can print out a few tick lists for each child to have in front of them, you describe the images or make up riddles, while they find them on one or more shared main image depending on group size. It's all about finding the right balance and keeping things engaging.