Birthday parties range from $14-29 per person, depending on the project you choose. You get two hours at the facility, with 1-1.5 hours for your project, and 30 minutes for cake and presents. (during store hours). After hours parties are available with a minimum of $250. Parties are for kids ages 4 and up and available Saturday at 11 AM or 2 PM. A ratio of 1 parent to every 5 kids present required, since the projects sometimes call for occasional adult assistance.