On the social media platform Threads, Stephen King responded to a post from the host of the "Talking Scared Podcast."
In the original post, the author expressed disappointment with the final season of "Squid Game":
King reposted this message with the words: "Then you'll love 'The Long Walk.'"'Squid Game' would be the greatest series in history if they just cut out 100% of everything that isn't actually the 'Squid Game.'
Here's the catch: while "Squid Game's" third season is already on Netflix, we'll have to wait until August 11 for the premiere of King's novel adaptation. The main roles in "The Long Walk" will be played by Judy Greer, Mark Hamill, Ben Van, and Charlie Plummer.

Source:
DALL-E
They have to... just keep walking forward. But anyone who stumbles or slows down gets immediately shot by the organizers. Participants are forced to keep moving until only one remains alive. The winner gets their deepest wish granted.

Source:
imdb.com
Zoomboola.com notes that "The Long Walk" was actually the first full novel Stephen King ever wrote, though "Carrie" was published first in 1974, while "The Walk" didn't see the light of day until 1979 (under the pseudonym Richard Bachman).
As for "Squid Game's" third season, it's indeed showing weaker results than the previous two. On the film critics' site Rotten Tomatoes, the critics' rating at the time of writing stands at 79%, while the audience rating is just 50%. Not quite "rotten tomatoes" territory, but pretty mediocre results. For comparison, the first season scored 85% and 66% respectively, while the second hit 83% and 63%.