Ages 6+ kids can play independently. However, they have more fun when parents/caring adults are playing with them. From the play dates we've held, kids enjoy seeing their parents/caring adults move with them.
We have had play dates with pre-schoolers and Kindergarteners (age 4.5-6) and they need a little more support from parents/caring adults. This age group enjoys this game too and usually follow the illustrations or copy a parent/caring adult or older kids playing with them.