That's a great recreation.  I also like the intro where you make a call. Maybe you can complete the scene one day so that we can look around for higher immersion. I like also the different player- and celebrate animations.

Ideas: 

- First person view could be also interesting (POV).  Adding a key for first person where the player head is hidden.

- Are you going to add also GLASS BRIDGE one day? One of the most popular games in Squid Game. 

- Adding a room where you can see how the piggy bank is filled with money after a match is finished.