Physicists estimate that 47 percent of the energy in the universe is stored in stars, and the other 98 percent rages inside human children. Release your child's unyielding cosmic energy with today's Groupon: for $18, you get six open-play passes at GameTime Inflatables in Moore (a $36 value). The open-play pass can be used for one child over six separate visits, or applied to one day of fun for your boisterous sextuplets.

GameTime Inflatables packs its 3,000-square-foot indoor play zone with inflatable games, letting kids of all ages literally bounce off the walls. Youngsters hop, skip, and scurry through the colorful tunnels of the jungle gym before plummeting down its inflatable slide. Experience the gravity-free benefits of space minus the hassle of being unable to hear oneself scream with a turn on the castle moonbounce. Pint-sized opponents, meanwhile, can settle Pop-Tart vs. toaster strudel feuds once and for all with a climbing, crawling, and caroming battle on the inflated obstacle course. GameTime’s picnic tables give tired legs a break from the bouncing with a nice sit and snack.

GameTime Inflatables' open-play space is open Monday through Friday from 8 a.m.–5 p.m., allowing kids to get a full day’s work of playing in before heading home and paying bills. Adult supervision is required and socks must be worn on feet at all times, although special exceptions may be made for seasoned hand-puppet performers.