《遊戲王》作為經典的卡牌對戰遊戲，其核心玩法圍繞怪獸卡、魔法卡與陷阱卡的組合與策略運用。玩家透過回合制進行抽卡、召喚怪獸、發動卡片效果、進行戰鬥，遊戲的最終目標是將對手的生命值（LP）降至零，或者使對手的牌組耗盡而獲勝。整體遊戲流程可以分為牌組準備與實際對戰兩個階段，對戰過程則按照抽卡、準備、主要階段一、戰鬥階段、主要階段二、結束階段循環進行，玩家需要靈活運用怪獸卡的攻防，同時搭配魔法與陷阱卡來扭轉戰局，使遊戲的策略性與變化性大幅提升。

在遊戲設置方面，玩家首先需要組建自己的牌組。標準遊戲規則要求主卡組為四十至六十張卡片，額外卡組十五張，副卡組最多十五張（可選擇使用），且同名卡最多可放置三張。每位玩家的初始生命值為八千點。遊戲開始時，雙方洗牌後各抽取五張手牌，並決定先後攻，以此展開對戰。

卡牌種類上，怪獸卡是遊戲的戰鬥主力，根據功能分為普通怪獸與效果怪獸，效果類型包括反轉、起動、永續、誘發即時與規則效果等，玩家可以利用怪獸進行攻擊或防禦。魔法卡在發動後可以提供各種效果，例如增強怪獸能力、破壞對手卡片、抽取更多卡片等，有些魔法卡可速攻或蓋放使用，依卡片效果而定。陷阱卡則需先蓋放在場上，並在特定時機發動，用以干擾對手策略或保護自身怪獸。除了基本卡片之外，遊戲還有各類特殊怪獸，如融合、同步、超量、連結、靈擺等，以及場地魔法、速攻魔法等，這些元素為遊戲增添了更多戰術深度與變化。

回合流程方面，以大師規則為例，每個回合從抽卡階段開始，玩家從主卡組抽一張卡，先攻的玩家在第一回合不進行抽卡。接著是準備階段，此階段可觸發部分卡片效果，讓玩家提前部署策略。主要階段一是玩家召喚或設置怪獸、發動或設置魔法與陷阱卡，並可改變怪獸的表示形式，以便為戰鬥階段做好準備。戰鬥階段中，怪獸可用於攻擊對手怪獸或直接攻擊對手生命值，但先攻的玩家在第一回合無法直接攻擊。主要階段二操作方式與主要階段一相同，玩家可以進一步調整戰略或補充部署。回合的最後是結束階段，如果手牌超過六張，必須選擇棄牌至六張後，才輪到對手操作。

遊戲的勝利條件主要有兩種，一是將對手的生命值降至零，二是當對手需要抽牌但其牌組已無卡可抽時，玩家也將獲勝。戰鬥與策略方面，怪獸的表示形式分為攻擊表示和守備表示，攻擊表示用於主動進攻，而守備表示可防禦對手攻擊，但若守備力低於對手的攻擊力，怪獸將被破壞。怪獸效果需要在回合內宣告，魔法與陷阱卡則在條件滿足時發動，陷阱卡需蓋放一回合後才能使用。卡片效果之間可形成連鎖，按照優先順序逐一處理，玩家需預判對手行動以最大化策略效果。此外，只要達到條件，可以進行特殊召喚，包括融合、同步、超量與連結等多種方式，這為遊戲帶來翻轉戰局的可能性。

總的來說，《遊戲王》玩法複雜多變，策略性與深度極高。新玩家建議從基礎規則與簡單牌組開始，並透過觀看教學影片與參與實戰練習來熟悉不同階段的操作與卡片效果搭配。通過對怪獸攻防、魔法陷阱運用以及回合流程的掌握，玩家能體驗到這款卡牌遊戲獨特的策略魅力和無窮變化。

"Yu-Gi-Oh!" is a classic trading card game whose core gameplay revolves around the strategic use of Monster, Spell, and Trap cards. Players take turns drawing cards, summoning monsters, activating card effects, and engaging in battles. The ultimate goal is to reduce the opponent’s Life Points (LP) to zero or to deplete their deck so that they can no longer draw cards, thereby achieving victory. The game flow can be divided into deck preparation and the actual duel, while during a duel, players follow a structured sequence of phases: Draw, Standby, Main Phase 1, Battle Phase, Main Phase 2, and End Phase. Players must skillfully utilize monster cards for attack and defense while combining Spell and Trap cards to alter the course of the match, making the game highly strategic and dynamic.

At the setup stage, each player constructs a deck. Standard rules dictate that the Main Deck contains 40–60 cards, the Extra Deck has 15 cards, and the Side Deck may include up to 15 cards if desired, with a maximum of three copies of the same card. Each player starts with 8,000 Life Points. At the beginning of the duel, both players shuffle their decks, draw five cards, and determine who goes first to commence the match.

Regarding card types, Monster Cards serve as the primary combat force and include Normal Monsters and Effect Monsters. Effect Monsters possess abilities such as Flip, Ignition, Continuous, Trigger, and Rule effects, which players can use for offense or defense. Spell Cards provide various effects when activated, including enhancing monsters, destroying opponent cards, or drawing extra cards, with some Spells being Quick-Play or set on the field. Trap Cards must first be set face-down and are triggered in response to specific situations, often to disrupt the opponent’s strategy or protect monsters. Beyond these standard cards, the game includes specialized monsters such as Fusion, Synchro, Xyz, Link, and Pendulum monsters, as well as Field and Quick-Play Spell cards, all adding layers of tactical depth.

The turn structure under Master Rules begins with the Draw Phase, where a player draws one card from the Main Deck (except the first turn of the player going first, who does not draw). This is followed by the Standby Phase, during which certain card effects can be activated. In Main Phase 1, players summon or set monsters, activate or set Spell and Trap cards, and can change the battle positions of monsters to prepare for the Battle Phase. During the Battle Phase, monsters may attack opponent monsters or directly attack the opponent’s Life Points, although the first player cannot attack directly on the first turn. Main Phase 2 allows actions similar to Main Phase 1, giving the player another opportunity to adjust strategy or deploy cards. The turn concludes with the End Phase, during which a player must discard down to six cards if they hold more, before passing the turn to the opponent.

Victory can be achieved in two ways: reducing the opponent’s Life Points to zero or causing the opponent to be unable to draw a card when required. Strategic gameplay involves monster positions, with Attack Position monsters used offensively and Defense Position monsters used for protection; however, if a defending monster’s Defense Points are lower than an opponent’s attack, it is destroyed. Monster effects must be declared during the turn, while Spell and Trap cards activate when their conditions are met, with Traps requiring one turn after being set. Card effects can form chains, which are resolved in order of priority, requiring players to anticipate and react to opponent moves. Special Summoning allows players to summon monsters via Fusion, Synchro, Xyz, Link, and other mechanics whenever the conditions are met, creating opportunities for dramatic turnarounds.

In summary, "Yu-Gi-Oh!" is a highly complex and versatile game with deep strategic elements. New players are advised to start with basic rules and simple decks, while also watching tutorial videos and participating in practice duels to become familiar with the different phases and card interactions. Mastering monster attacks and defenses, Spell and Trap usage, and turn flow allows players to fully experience the unique strategic depth and dynamic gameplay that defines this iconic trading card game.