Unfortunately, they run the gamut in terms of tone balance between Battle Royale (contestants killing each other) and Games. Some are more realistic, some more sci-fi, and some super natural.
On Netflix, High Rise Invasion comes to mind, but it's not nearly as good as Squid Game. It's more Battle Royale too.
Not on Netflix, Battle Royale is not bad, 13 Tzameti is creepy and weird. As the Gods Will has games that feel very similar to Squid Game but the setup is a bit weak.
My actual favorite is Kakegurui (because the characters are weirdos and the games are neat) but that's in the gambler genre and they wimped out by not making the games deadly (mostly.) I don't think people who like Alice or Squid Game will necessarily like Kakegurui, I just love them all, so I am recommending it.