[sidibe]

Seems like most things kids want to do just require yards or houses and other kids.

Before you can drive I think the main factor for how much fun your environment is (assuming safety and no poverty) is the density of kids your age in the neighborhood.

[watwut]

Kids do what is available. And kids are definitely able to use more then just yard.

Yard gets boring when you are like 6. Then the kids either have bigger space to bike, explore, play actual hide and seek where they can actually hide etc .... or move all activities inside typically toward videogames.