After barely avoiding a deep dive into the abyss, in episode six, the survivors are met with the most emotionally brutal game: Marbles. The only objective is to obtain all 10 of your partner's marbles. In the show, most of the older players hide any number of their marbles in their hand and task their opponent with guessing if the amount is even or odd. If the partner guesses correctly, they get to take the marbles and add them to their batch. But if they guess wrong, they have to relinquish the number of marbles in their opponent's hand to them. The games' younger players get to make up their own rules, though, since the game is so old-school, they don't know how to play. In this episode, we see cold-hearted betrayals, floundering morals and star-crossed friendships.
How to Win: Betrayal — that's it.