“Family Pack” is a slick, silly, hot-mess of a fantasy comedy, a French “Jumanji” based on a French board game.

A French family — including aged, forgetful Grandpa (the great Jean Reno) — tempts fate by playing an old, carved “Kill ze Werevolves” game and finds itself transported into the late 15th century, after Columbus visited the Caribbean but before superstition gave way to logic and the law.

That set-up is good for a few laughs, and a few one-liners as music teacher Dad (Franck Dubosc), legal aid lawyer Mom (Suzanne Clément), his teen influencer daughter (Lisa Do Couto Texeira) from his first marriage, her son (Raphael Ramond) from hers and their always “STARving!” little girl (Alizée Caugnies) contend with werewolves and a lop-off-their-heads/ask-questions-later sheriff (Grégory Fitoussi).

No, this is no “Renaissance Faire.”

Starting the carved board game and carelessly putting it away is what lands them in 1497, in a Medieval version of Granpda’s house. They eventually figure out they’re each “characters” in the game — a shape-shifting “thief,” the “muscle” (Grandpa), a witch, an invisible woman etc.

Dad’s the quick thinker who tries to pass them off as “traveling minstrels” to the suspicious locals, grabbing a lute and getting the family to sing along. No, he doesn’t know the “hits” of the day — “Good King Charles VIII,” “I Slaughtered a Burgundian.”

They much use their “powers” to sniff out the werewolves in town, kill them and collect game pieces.

Joking through a beheading, grimacing when the crown officer acknowledges “we made a mistake” about that beheading, they must keep themselves from turning into werewolves, too.

At least Grandpa is strong again, and a lot less forgetful. Reno gets the film’s best line about offspring avoiding their elderly parents.

“It’s very hard watching people disappear.”

If you watch it, let the kids practice their French comprehension and let Reno speak in his real French voice, with subtitles. The English dubbing spoils some of the (limited) fun.

The effects are passable and the cast is game, but there isn’t much to this, and the silly is never quite silly enough to take it over and give it full-fledged-farce status. There’s entirely too much tidying up this era’s shortcomings via the gay Italian painter and inventor Piero (Bruno Gouery) offering “inventions” (an electric guitar turns on the Renaissance Faire crowd to French heavy metal).

But “Family Pack” is far from the worst time-killer on Netflix right now.

Rating: TV-MA, violence, some profanity

Cast: Franck Dubosc, Suzanne Clément, Lisa Do Couto Texeira, Raphael Romand, Bruno Gouery, Alizée Caugnies, Grégory Fitoussi and Jean Reno.

Credits: Directed by François Uzan, scripted by François Uzan and Céleste Balin, based on a French board game. A Netflix release.

Running time: 1:34