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 $15, you get four open-play admissions at Scooter's Jungle in Placentia (up to a $36 value).

Scooter's Jungle allows parents to set tykes loose in a titanic jungle-themed playground designed for burning off energy in a safe and supervised environment. The facility is supervised by a cadre of energetic staffers who share a passion for working with children to ensure that Lord of the Flies scenarios remain hypothetic. The lobby's vine-bound stuffed animals lament their immobility as children fly by on the zipline and cruise down a 24-foot inflatable slide. A sport court hosts games such as basketball and soccer, along with free table games, bestowing tots with would-be Olympic sports such as air hockey and foosball.

Scooter's Jungle imposes no age limitations, so adults remain free to partake in the rumpus as their children look on with disapproving eyes. Wee ones 6 years old and younger can enjoy 1.5 hours of revelry during Toddler Time (children younger than age 1 are free) or partake in two hours during all-ages open play. Guests are also welcome to bring the whole clan for three hours of communal carousal during Family Fun Night (children under the age of 2 are free during all ages and family-fun hours).

Open-play sessions vary from day to day. Call ahead or check the online calendar for a weekly schedule.