"Squid Game" - The Hidden Clues You Missed
The Netflix production "Squid Game" has completely blown up, and its ending is getting a lot of buzz. What clues did you miss during the show?

He Feels Like he Knows More than the Others in Many Games:
Even in the game Red Light Green Light, player 001 as II-nam is not scanned as intensively as the other players – are they supposed to be careful not to kill him from the start? He also always stops moving just before the lights, so you'd think he already knows when they're coming.
Gi-hun offers to swap the shape of the star for the shape of the umbrella, which they have to cut out of the honeycomb. Il-nam, however, seems to know in advance that the star is much faster than the umbrella, which seems to be the easier shape at first sight!
During tug-of-war, he seems to be able to use his accumulated experience from all the games he has seen before to find the right strategy to win. Who has seen that many tug-of-war games in his normal life?
But soon his true identity becomes even more evident :