Trap Cards are a type of card used in the Yu-Gi-Oh! trading card game. They are placed face-down on the field and can be activated in response to specific actions taken by the opponent or during certain phases of the game. Trap Cards can disrupt an opponent's strategy, protect your own cards, or provide various effects that can turn the tide of a duel. There are different categories of Trap Cards, including Normal Trap Cards, Continuous Trap Cards, and Counter Trap Cards. Each type has its own rules for activation and usage. Players often include Trap Cards in their decks to create a balanced strategy and to counteract their opponent's moves effectively.