於1990年7月24日在Neo Geo街機基板（MVS）與家用主機（AES）上推出的《忍者大戰》（Ninja Combat / ニンジャコンバット），是由ADK（Alpha Denshi）開發、SNK 發行的橫向捲軸動作過關遊戲。作為Neo Geo初期備受矚目的作品之一，它與《霸王忍法帖》、《魔導傳奇》並列，被玩家視為帶有「忍者元素」的代表性陣容。憑藉誇張奔放的「美式和風」視覺風格、支援雙人合作的爽快節奏，以及極具特色的同伴加入系統，在早期街機市場中留下強烈而帶點邪典氣息的獨特印象。

在基本表現層面，可說是 Neo Geo 硬體性能的早期展示舞台之一。充分運用高發色數與大型角色縮放能力，讓畫面中的人物顯得格外巨大且具有存在感。場景設計跨越近未來的都市街頭、陰森詭譎的日式古城，以及帶有強烈科幻色彩的敵方基地，每一關都呈現出截然不同的視覺氛圍。特別是在戰鬥演出方面，當角色施展忍術時，畫面會出現巨大漢字特效，搭配誇張的爆炸與煙霧動畫，使整體動作張力極為強烈。再加上節奏鮮明、充滿90年代電子合成風格的背景音樂，使遊戲在熱血之餘，也帶有一絲荒誕與戲劇性的張力。

故事背景設定在一個被邪惡忍者組織「影一族」侵襲的近未來城市。其領袖幻妖齋企圖藉由黑暗力量征服世界，並在城市中心建造巨大的據點「忍者塔」，逐步擴張勢力。玩家將操作兩位現代化忍者——身穿紅色裝甲的喬與藍色裝甲的海亞布沙，踏上討伐之旅，從城市街道一路突入敵方核心。隨著劇情推進，玩家會遭遇各式強大的敵方忍者，其中一些在被擊敗後會受到主角精神所感化，轉而加入隊伍，形成一支逐漸壯大的忍者戰力。這種帶有轉化與集結元素的敘事，使遊戲在單純的過關斬將之外，多了一層英雄集結的成長感。

在操作體驗上，採取與傳統近戰為主的動作遊戲略有不同的設計思路，強調中距離與遠距離的火力壓制。玩家主要透過連續投擲手裏劍進行攻擊，並可在過程中取得不同武器，例如威力強大的旋風鐮刀或具備多方向攻擊能力的特殊手裏劍，讓戰鬥節奏更加多變。當敵人逼近時，角色則會自動轉為近戰攻擊，形成一種隨距離變化而自然切換的戰鬥節奏。此外，遊戲中的忍術系統也是一大亮點，玩家可以透過能量累積施放全畫面攻擊，例如火焰或雷電效果，帶來極具震撼力的清場體驗。在雙人模式下，兩名玩家甚至可以同步發動技能，形成更加華麗且具有壓倒性破壞力的連攜演出。隨著關卡推進解鎖的角色系統，也讓玩家能在不同關卡選擇適合的戰鬥風格，增加遊戲的策略性與重玩價值。

在市場評價方面，被普遍視為一款風格極為鮮明且帶有「魔性魅力」的作品。評論者普遍肯定其鮮豔的色彩運用與誇張的人物比例，認為它成功捕捉了當時西方對忍者文化的想像與再詮釋，呈現出一種既陌生又吸引人的異文化風格。雖然在操作手感上，與後來同類型的經典作品相比略顯僵硬，判定也偏向嚴苛，但其充滿創意的關卡設計與視覺演出，依然讓它在眾多街機作品中脫穎而出。

值得一提的是，本作也因其難度而聞名，被不少玩家視為典型的「吃幣機」。後期關卡中敵人會從四面八方湧現，節奏快速且壓迫感十足，對單人玩家而言尤其嚴峻。然而，正是這種近乎不講理的挑戰性，加上獨特的夥伴系統與濃厚個人風格，使其成為 Neo Geo 早期作品中極具收藏價值的一員。即使放在今日回顧，《忍者大戰》依然展現出那個年代開發者大膽創新、不拘一格的精神，也讓人重新感受到2D街機動作遊戲最純粹直接的樂趣。

Released on July 24, 1990, for the Neo Geo arcade system (MVS) and home console (AES), Ninja Combat (ニンジャコンバット) is a side-scrolling action game developed by ADK (Alpha Denshi) and published by SNK. As one of the standout early titles for the Neo Geo platform, it is often grouped alongside Ninja Commando and Magician Lord as part of the system’s unofficial “ninja trilogy.” With its wildly exaggerated “Westernized Japanese” visual style, fast-paced two-player cooperative gameplay, and distinctive companion recruitment system, the game left a bold and slightly cult-like impression on the early arcade scene.

From a technical and presentation standpoint, Ninja Combat serves as an early showcase of the Neo Geo’s hardware capabilities. The game makes full use of the system’s rich color palette and large sprite scaling, resulting in oversized, highly expressive character designs that dominate the screen. Its stages span a variety of settings, including near-future urban streets, eerie traditional Japanese castles, and sci-fi-inspired enemy strongholds, each offering a distinct visual identity. One of the game’s most striking features is its sense of dynamic action: when players unleash ninja techniques, large kanji characters flash dramatically across the screen, accompanied by explosive visual effects and dense smoke animations. Combined with its energetic, synth-driven soundtrack characteristic of the early 1990s, the game creates an atmosphere that is both intense and slightly surreal.

The story is set in a near-future city overrun by an evil ninja organization known as the “Kage Clan.” Led by the sinister Genyousai, the group seeks to conquer the world using dark powers, constructing a massive stronghold known as the “Ninja Tower” at the heart of the city. Players take on the roles of two modern-day, high-tech ninjas: Joe, clad in red armor, and Hayabusa, in blue. Their mission is to fight through the city and dismantle the Kage Clan’s operations. As the journey progresses, players encounter powerful enemy ninjas, some of whom—once defeated—are inspired by the protagonists’ strength and join their cause. This evolving roster of allies adds a sense of progression and camaraderie to the otherwise straightforward action narrative.

In terms of gameplay, Ninja Combat distinguishes itself from traditional melee-focused action games by emphasizing mid- to long-range combat. Players primarily attack by rapidly throwing shuriken, while various weapon pickups—such as powerful spinning sickles or multi-directional projectiles—add variety to combat. When enemies close in, characters automatically switch to close-range attacks, creating a fluid transition between combat distances that demands strong positional awareness. The game also features a powerful “Ninja Magic” system, allowing players to unleash screen-clearing attacks like fire or lightning once sufficient energy is accumulated. In two-player mode, simultaneous activation of these abilities results in even more spectacular and destructive effects. Additionally, the unlockable character system introduces strategic variety, as different characters offer unique movement speeds, attack ranges, and abilities, encouraging experimentation and replayability.

Critically, Ninja Combat is widely regarded as a highly distinctive and somewhat eccentric title. Reviewers praised its bold use of color, oversized character designs, and its imaginative reinterpretation of ninja culture through a Western lens, giving it a unique cross-cultural flair. While its controls have sometimes been described as slightly stiff compared to later genre classics, and its hit detection can feel unforgiving, the game’s creative level design and flashy presentation continue to earn it a dedicated following.

The game is also notorious for its high difficulty, often labeled as a classic “coin-eater” of the arcade era. In later stages, enemies attack relentlessly from all directions, creating intense pressure—especially for solo players. However, this very challenge, combined with its unique partner system and strong stylistic identity, has cemented Ninja Combat as a prized title among Neo Geo enthusiasts. Even today, it stands as a vivid example of the bold experimentation and unapologetic design philosophy of early 1990s arcade games, offering a raw and exhilarating experience that captures the essence of classic 2D action gaming.