There’s literally hundreds of shows and movies.

What some people have missed is that this is its own sub-genre of horror.

You have shows like Alice in Borderland that doesn’t get nearly enough love (and is far better than Squid Games in my opinion).

Cube is a late 90s movie that’s on this theme too. You could argue the SAW movies are too, though I’m not personally a fan of those.

There are also plenty of comics on this theme too. The aforementioned Alice in Borderlands is based on a manga by the same title.

Cube is a great lesson in budget filmmaking.

I came here specifically to recommend Alice in Borderland. I believe season 3 is due out soon this year.

I just watched season 2 of Squid Games and whilst it was fun and I enjoyed it, it didn't really seem to add much to the series.

...horror?

…yes…

I've been waiting for someone to mention Liars' Game! When I started watching Squid Game that's the direction I hoped it was going in. Still good, and season 2 seems to be more in that vein than the first was. But in general I'm a huge fan of stuff that makes you wonder "how are they going to game their way out of it this time?"

[..]Squid Game’s creator Hwang Dong-hyuk openly admits to taking inspiration from Battle Royale[..]

To be fair, they seem to also name Liar Game, as also Kaiji.

Lair’s Game was like a decade after BR