Physicists have determined that the best way to subdue wall-bouncing photons is to let them loose until they need a nap. Apply the latest scientific findings to your kid’s playtime with today’s Groupon: for $30, you get a 10-visit frequent player pass to Planet Kid in the Wings Center (a $60 value). The pass may be used for multiple children at once and/or across multiple visits.

Planet Kid hosts one of the largest soft indoor playgrounds in Idaho. Offering healthy recreational alternatives to the basketball-shaped video-game consoles and vegetable-shaped junk food so heavily marketed to children, Planet Kid sends excitable tykes and active 12-and-unders tumbling through blood-pumping playable obstacles. Gaze upward at the towering climbing tube known as the Astral Ascent, or crane your neck further for a glimpse of Moon Mountain, a giant wade-able ball pit. A collection of space-themed slides like the Comet, the Milky Way, and the Star Shoot test fundamental laws of gravity without resorting to pelting famous physicists in the face with apples. Kids looking to conquer their fear of heights before moving onto their fear of inherently evil clowns will enjoy the Reach the Peak two-sided mountain-rope climb.

Unlike its TV- and recliner-heavy competitor, Planet Middle-Aged Man, Planet Kid was designed to promote lasting physical well-being, as well as provide a space for like-minded kids to socialize through highly evolved recreation. Parents can cheer their kids on from the sidelines or kick back and enjoy the facility’s free WiFi. Socks are required, so if your child forgets to bring them or loses them in one of the many black holes in the ball pit, Planet Kid will sell you a pair for $2.