As a last digit:
0, 2, 4, 6 and 8 are even, so they're out.
5 is out since it makes the number divisible by 5; a semi-even number
1 and 9 are closer to an even number so it would seem fake to choose "49" or "51" just to avoid "50"
So we're left with 3 and 7.
Similar logic, for the first letter, albeit less pronounced.
So we have 33, 37, 73 and 77.
33 and 77 are "obviously" not random so it's either 37 or 73. Not using common digits, not near the beginning, middle or end. In fact, they're closer to 25 and 75 (1/4 and 3/4 of the range) than to 0, 1/2 or 1. Also closer to 1/3 and 2/3. Just random thoughts.
It's quite similar to Squid Games, though it was released first and adapted from an earlier, excellent manga. The first two seasons are superb, but the third season can be skipped as it's very much an after-thought.
It's got references to Alice In Wonderland, so the main character, Arisu, is Alice. Usagi is the white rabbit and Chishiyu is the Cheshire Cat.
Reminds me of the 3 Cube movies about people stuck in a deadly puzzle. I don't remember them so well (or at all) so I might as well rewatch them at some point lol. There's even a new one from 2021 that I didn't know about.
I first watched Alice In Borderland when the first two seasons came out, but then when I heard that they were releasing a third season, I rewatched the first two seasons again as it had been a couple of years. I probably enjoyed it more the second time of watching, though the third season was a bit meh. I since started reading the manga which features some different games (and vice versa).
I think what elevates Alice in Borderland over Squid Game is the character development. My favourite character has to be Chishiya as he calmly watches and evaluates each situation and just aura farms whilst others panic (sometimes known as the Unbothered King).
There were a few similar movies, most of which take place in 1 location.
Exam (2009)
The Belko Experiment (2016)
I forget some now.
Similar, kinda, is The Game (1997).