Why Does The Old Man Allow Gi-hun To Win At Marbles?

The fourth round of the Squid Game involves an old man playing marbles. Oh, Il-nam lets Gi-hun win – but how did that happen? Squid Game quickly became the most popular show on Netflix, as well as one of the most talked-about shows on the internet, after its initial release. This is not only due to the show's excellent acting, but also because the finale leaves several questions unanswered, such as why the marble game finished the way it did.
After Gi-hun and Il-nam have wandered around the fictitious residential neighborhood where the marble game takes place, which Il-nam claims resembles his own previous neighborhood, Il-nam decides to play the game.