Not only that but Squid Game is literally the “real live adaptation” of Kaiji; the creator has said that it (the initial concept, the premise, etc) is based on Kaiji (he said it’s inspired by a manga with the same theme).

The card game with the slave (I love that one) and the “waza” in the background when the main character doubts himself are some iconic missing adaptations. :)

Here is an online adaptation of it: https://e-card-kaiji.netlify.app/