In the game of marbles, the participants had to group into two. No matter what method is used, as long as they don't use violence, whoever wins all of their opponent's marbles will be saved while the other will die.
第五關：墊腳石橋 The Glass Bridge「踩著屍體過橋 Over your dead body」
Participants freely choose their numbers before the game starts. Later, they learned that they need to cross the bridge in the order of numbers. The bridge is composed of two types of glass. The regular glass will break even when only one person stands. The tempered glass can bear the weight of two people. For each step, you must try to choose the tempered glass to pass the bridge, otherwise you will fall to death.
劇中德秀老大不願讓後人乘涼，居然把他後面的參加者，推出去測試前方的玻璃，反映出人性醜陋「踩著別人屍體過橋 Over your dead body」的社會現實。最後德秀老大也被韓美女用玉石俱焚的方式一同摔下橋。
第六關：魷魚遊戲 The Squid Game「不能自曝其短 Don't show weakness」
3 ways to win: The attacker breaks through the defender and step on the head of the squid drawing to win; the defender pushes the attacker out to win; either the attacker or the defender enters a state where the game cannot be continued (such as dead), the remaining side wins.