One antidote for blockbuster fatigue during the summer is a loose, lighthearted and playful comedy. Based on a 2013 Wall Street Journal article by Russell Adams about a group of friends who have played the same game of tag for 23 years, the featherweight romp “Tag” follows the stranger-than-fiction antics of a group of men who subscribe to the belief that “we don’t stop playing because we grow old, we grow old because we stop playing.”

With a cast of likable actors at their most lively, and some energetic directing from TV director Jeff Tomsic making his feature film debut, “Tag” is, like the game itself, a whole lot of rambunctious fun.

The script, by Rob McKittrick and Mark Steilen, focuses on the last few days in May, the month during which a group of childhood pals plays their official game of tag. The crew’s unofficial booster, Hoagie (Ed Helms), lures his friends into a debaucherous weekend trip with the threat that their friend Jerry (Jeremy Renner) is planning to retire from the game. The catch? Jerry’s never been tagged — he’s the best the game’s ever seen, and these guys are bound and determined to tag him, his wedding be damned.

From the opening scene — wherein Hoagie, a successful vet, applies for and gets a janitorial job at his friend’s insurance company to infiltrate his building and tag him — we know this isn’t just a normal game of tag. The crew goes to some extreme measures: costumes, booby traps, body doubles and fake-outs escalate during Jerry’s wedding weekend until they’ve pushed it too far.

Hoagie, the self-proclaimed “heart and soul of the game,” doesn’t know when to stop. He’s nearly maniacal in his quest to tag Jerry, but as it becomes clear, it’s not about the tagging. It’s about being close to each other, hanging out and just playing with your friends, a seriously lost art form in adulthood.

Part of the easy fun of “Tag” is how the filmmakers just place a crew of personas into the environment and let them bounce off each other. The characters do verge on typecasting -— Jon Hamm the dashing insurance man Bob; Jake Johnson the deadbeat stoner Chilli, Hannibal Buress the laconic weirdo Sable, while Renner plays the hypervigilant trainer Jerry as a cross between Jason Bourne and Neo from “The Matrix,” dodging attempted tags with lightning fast martial arts moves.

While “Tag” doesn’t get every character beat right, it nails the energy and enduring companionship the game has engendered among this group of friends. It’s the kind of frothy escapist fare that goes down easy on a hot summer day, with a big old beating heart to boot.