Kaiji (2007)

Kaiji: Ultimate Survivor, the 2007 anime A slacker stuck with a friend's debt is offered one night of gambling to clear it, and the first game is rock, paper, scissors played with a limited hand of cards on a ship. It sounds small until you watch the counting, the bluffing and the betrayals that a card shortage creates. The narration is famously overwrought and the art style is jagged, which takes an episode to accept. After that it is one of the most tense gambling stories on television, and a sharp look at how debt is used to make desperate people play.