Physicists estimate that 47% of the energy in the universe is stored in stars, and the other 98% rages inside human children. Release your child's unyielding cosmic energy with today's Groupon: for $12, you get three open-play passes and a crown for kids 10 and under at Inflatable Kingdom (up to a $24 value). Parents must be present during play.

Inflatable Kingdom's pint-size citizens romp through a colorful panorama of inflatable entertainment. With feet safely clad in socks or stuffed into sock puppets, kids can slip down a fire-truck slide or dodge through the Wacky World obstacle course's hurdles. A princess peeks from the turret of a towering castle outfitted with a bounce area, slide, and its own obstacle course, as make-believe zookeepers bound through a zoo-themed jump area. Adults can train eyes on their kids' frolicking from modern black- and red-backed stools lining tabletops. At session’s end, each valiant bouncer is capped with a toy crown, granting the ability to issue legally binding edicts.