《水滸傳：天命之誓》（Bandit Kings of Ancient China）是由 Koei 在任天堂紅白機（Famicom / NES）上推出的一款策略模擬遊戲。在當年以極高的難度、複雜而深刻的系統，以及對《水滸傳》原著的獨特詮釋而廣為人知，被許多老玩家視為硬派策略遊戲的代表之一。

遊戲背景設定在北宋末年，玩家將扮演一名被流放的義士，例如林沖、魯智深，或是自創角色，在亂世之中對抗權傾朝野的奸臣高俅。整體目標並非單純的武力征服，而是必須在歷史的時間限制之內建立聲望，取得「天命之誓」，最終進軍東京開封府擊敗高俅。遊戲內的時間會隨月份推進，一旦來到西元1127年，也就是歷史上的 靖康之難 爆發時，若尚未完成目標，遊戲便會強制結束，這種與歷史事件緊密結合的設計，讓整體過程充滿壓迫感與真實感。

最具特色之處在於其層層交織的系統設計。從不同劇本中選擇開局，每個劇本對應不同時期與勢力配置，使每次遊玩都有截然不同的體驗。「名聲系統」是遊戲的核心關鍵，玩家無法一開始就直接挑戰高俅，而是必須透過開墾土地、施捨百姓、戰鬥勝利等方式逐步累積名聲，直到獲得朝廷的認可。另一方面，每位武將都有「體力」限制，每個月能執行的行動有限，因此如何分配資源與行動，成為策略規劃的核心。戰鬥方面則採用六角格戰棋系統，並區分水戰與陸戰，充分呈現梁山泊水域地形的特色，也大幅提升戰術深度。

在經營與戰略層面上，收錄超過250名武將，每位角色都有不同能力、性格與忠誠度。透過戰場俘虜或在酒館招募人才，但如何留住人才同樣重要。內政方面，農業與商業提供糧食與資金，是戰爭的基礎，而「民心」更是關鍵指標，民心高漲時，不僅收入提升，徵兵效率也會顯著增加。此外，武將在戰鬥中會累積經驗並逐步成長，使其在火攻、陷阱等戰術上更具優勢，進一步強化培養與使用角色的策略性。

《水滸傳：天命之誓》之所以能成為經典，很大一部分來自其毫不妥協的高難度設計。初期資源極度匱乏，而高俅勢力持續擴張，經常面臨四面受敵的壓力。再加上季節變化對戰場的影響，例如冬季河川結冰導致船隻無法航行，使玩家必須隨時調整戰略，這在當時是相當前衛的設計。同時，也設有多種結局，會根據玩家的發展與成就給予不同評價，提升了整體的重玩價值。

與後來的《三國志》系列相比，節奏較為緩慢，更強調「生存」、「名望」與長期經營，而非快速擴張版圖。也正因如此，它帶來的是一種長時間與壓力共存的沉浸式體驗。對許多資深玩家而言，那種在資源匱乏中苦撐局勢、逐步壯大勢力，最終獲得天命的成就感，是其他作品難以取代的獨特記憶。

Bandit Kings of Ancient China (《水滸傳：天命之誓》) is a strategy simulation game developed and published by Koei for the Nintendo Entertainment System (Famicom). At the time of its release, it became well known for its extreme difficulty, deep and complex systems, and its unique interpretation of the classic Chinese novel Water Margin.

The game places players in the role of an exiled outlaw hero, such as Lin Chong or Lu Zhishen, or even a custom-created character, during the final years of the Northern Song dynasty. The central conflict revolves around resisting the corrupt official Gao Qiu. The ultimate objective is not simply conquest, but to earn the “Mandate of Heaven” by raising your reputation above a certain threshold while ultimately defeating Gao Qiu in the capital, Kaifeng. At the same time, the game operates under a strict time limit tied to historical events. If the player fails to achieve their goal before the year 1127—when the Jurchen invasion triggers the Jingkang Incident—the game ends automatically, reinforcing a constant sense of pressure.

What sets this title apart is its layered and demanding gameplay systems. Players can choose from multiple scenarios set in different time periods, each offering distinct starting conditions, territories, and allies. The reputation system is particularly crucial, as direct confrontation with Gao Qiu is impossible without first earning legitimacy through actions such as land development, charity, and military victories. Every officer is governed by a stamina system that limits how many actions they can perform each month, forcing players to carefully allocate resources and plan ahead. Combat takes place on hex-based battlefields, with a clear distinction between land and naval warfare, reflecting the marshland environment of Liangshan and adding tactical depth rarely seen at the time.

Strategy in Bandit Kings of Ancient China revolves around managing both people and territory. The game features more than 250 officers, each with their own personality, loyalty, and abilities. Recruiting them can be done through battle captures or by seeking them out in taverns, but maintaining their loyalty requires careful attention. Domestic development is equally important, as agriculture and commerce provide the foundation for military campaigns. However, the game places even greater emphasis on public support; high morale among the populace directly improves recruitment and income. As officers gain experience through combat, their capabilities evolve, enhancing their effectiveness in specific tactics such as fire attacks or ambushes.

The game’s reputation as a classic stems largely from its uncompromising challenge and attention to detail. Resources are scarce in the early stages, while Gao Qiu’s forces continue to expand, often leaving players surrounded and struggling to survive. Seasonal changes further complicate matters, as environmental conditions directly affect gameplay—for example, rivers freezing in winter prevent naval movement, forcing players to adapt their strategies. In addition, the game offers multiple endings depending on the player’s progress, adding replay value and a sense of narrative consequence.

Compared to later titles such as Koei’s Romance of the Three Kingdoms series, Bandit Kings of Ancient China progresses at a slower pace and places greater emphasis on survival and reputation-building rather than rapid expansion. For many veteran players, it remains an irreplaceable example of hardcore strategy design, remembered for the tension of struggling against overwhelming odds and the satisfaction of finally earning recognition under the Mandate of Heaven.