This series reminds me of the manga ‘liar game.’ Both stories have the same concept; to win a game for load of money, but games in liar game are a lot more smarter than Squid game. The rules are more precise, no violence, no off-game time, only fight in game with mind and strategy.
I enjoyed watching this but I think protagonists character arc are so weird, many spots do not make sense and some games can be beaten without a brain, only using forces and there’s no rule to prevent that