Red Light, Green Light - S1-E1
Corrected entry: In the first game, the players must run after 'Green light' is said and stop moving when they hear 'Red light'. At the start, most players slow down considerably and then stop just before 'Red light' starts to be said. This is especially obvious in the English dub, where the song has been removed and players would not be able to predict when 'Red light' would be said.
The Man with the Umbrella - S1-E3
Plot hole: With all the cameras and guards watching, there's no way anyone would be able to use a cigarette lighter to help them pass the game.
Suggested correction: The guards do not care about cheating as long as it doesn't break the rules of the game or challenge the integrity of the games. Using a lighter was not explicitly forbidden by the rules, so even if they saw it (which is not guaranteed), the guards wouldn't step in.
Trivia: They keep guessing the next game, however clues are hiding in plain sight. The illustrations on the dormitory walls depict all the games, from "Red Light, Green Light" to the final match of Squid Game.
Correction: They can't predict it, but they're all being understandably very cautious. The gap between green and red is never too long, so they're just trying to make sure they're not still moving when "red light" is said.
Jon Sandys ★