Jump City (indoors). Inflated play equipment on a grand scale with slides, bouncing gear, and other things guaranteed to get some of the energy out of first graders. After you're done bouncing go to their party room for refreshments.

The business closed  in 2014.

Birthday parties $250 for 25 kids ($225 off peak). They also have random open hours (called "pop-in play") daily, mostly mornings during the week and evenings on weekends, for $6.50. You must wear socks to bounce.

http://jump-city.com

Jump City, 2825 Boardwalk in the Boardwalk Industrial Park, Ann Arbor, MI 48104

(734) 995-5055