Like these Kid's Activities!!! Check out the official app freecasinoslotgamesbookofra.win Watch more Games for Kids. How to Play Jacks. Jacks is a great, easy-to-learn game that can be played indoors on a hard floor or outdoors on concrete. It can be played in groups, pairs. Originally a scrolling computer game, Jumping Jack eventually became known as Leggit when it was released as an arcade game. Learn more here.