I had completely forgotten - my favorite childhood book 'Coral Island' by RM Ballantyne has a sling in it - 3 blokes stranded on an island - one uses a bow, one a spear and the protagonist uses a sling...

I wish I paid more attention as a kid! I would have been slinging from 9 years old instead of starting in my late 20's/early 30's (cant remember)

"Thierry la fronde" or in English : Thierry the sling. He's a kind of Robin Wood  with a sling.
It's an old (sixties) black and white TV show. No historical accuracy. Watching recently, I noticed a barbed wire fence on the edge of a field. But nice heroes.
Back then, I was a kid and I liked this TV show.

In the video game Far Cry Primal you can use a sling.

There is an older science fiction series, Dumarest of Terra.  The character grows up on Earth in a post-apocalyptic time.  He hunts with a sling while growing up.  He stows away on a spaceship and spends most of his life as a drifter.  But the series is about his efforts to find and return to his home, to earth.    His main weapon is a knife.  But he often talks about using the sling to stay alive and he uses one from time to time as an adult.  Author E.C. Tubb

The new Planet of the Apes movie had a sling appear in the first 5-10 minutes, but sadly no more after that. There was more extensive use of the bola later on.

TOMBELAINE wrote on Jul 27^th, 2022 at 7:10am:

Hysterical !
Reminds me so much of the English series Robin Hood.

I've got a two player fighting game based on slings in the works right now... It'll be a while until I release anything but the mechanics are coming along nicely so far. My profile picture is actually one of my early concept arts/animations.