《家庭教師HITMAN REBORN！禁忌的黑暗三角》（日文原名：家庭教師ヒットマンREBORN! 禁断の闇のデルタ）是由Marvelous Entertainment製作，並於2009年在任天堂Wii平台發售的動作冒險遊戲。改編自天野明創作的知名少年漫畫《家庭教師HITMAN REBORN！》，屬於原作動畫改編遊戲系列的一部分，但不同於前幾作主要為對戰或輕量級冒險，在劇情架構與玩法上更具規模，嘗試呈現原創劇情與立體戰鬥的結合。

故事完全原創，並非漫畫與動畫中的主線劇情。故事設定在某個被稱為「闇之三角地帶」的神秘空間，這裡是由三種黑暗能量構成的異界，充滿未知與危險。主角沢田綱吉與其夥伴們在一次時空異變中被捲入此地，必須面對由闇能量誕生的複製體與怪異敵人。更複雜的是，這些敵人不僅模仿他們的外貌與能力，甚至能操控「禁斷之力」，威脅著整個並盛町與未來世界的安危。綱吉與彭哥列家族成員深入這片未知領域，揭開三角地帶的真相，並解救被困的夥伴。

在操作上，可選擇多名角色作為出戰成員，每位角色皆擁有獨特技能與武器（如綱吉的X BURNER、獄寺的火箭炸彈等）。戰鬥以第三人稱動作為主，揮動Wii遙控器施展攻擊與閃避，同時可透過觸發「火焰驅動」或「絕招模式」來發動華麗的終極技能。場景設計多為封閉區域與立體迷宮構成，需邊探索邊戰鬥，解開機關、打倒Boss，並蒐集特殊道具以推進劇情。

除了動作要素外，亦穿插劇情動畫與語音對話，提供粉絲豐富的互動體驗。角色之間的交流保留原作的風格，例如綱吉的猶豫、獄寺的忠誠、雲雀的冷酷，都以過場劇情與戰鬥反應展現出來，讓玩家彷彿置身於REBORN的世界之中。畫面方面採用半卡通渲染風格，保留原作漫畫的線條感，並結合3D建模使戰鬥場面更具動感。角色語音由動畫原班聲優擔綱，增添不少臨場感。

就市場評價而言，此作整體反應偏向中規中矩。在日本的遊戲雜誌《Fami通》中獲得28/40的成績，評論認為其最大優勢在於原創劇情的構思與角色還原度高，特別是針對粉絲族群來說，是頗有誠意的延伸體驗。不過，遊戲性方面則被指出存在些許重複性與節奏拖慢的問題，尤其在迷宮探索中容易產生疲乏感；此外，戰鬥系統雖有創意，但動作手感略顯粗糙，無法與其他高品質動作遊戲相比。對一般玩家而言，本作或許缺乏足夠吸引力，但對於《REBORN！》的忠實粉絲來說，仍是值得一玩的延伸作品。

綜合來看，《家庭教師HITMAN REBORN！禁忌的黑暗三角》是結合動畫原作魅力與Wii特色操作的粉絲向動作遊戲。雖然在系統成熟度與關卡設計上尚有進步空間，但其故事、角色演出與視覺風格成功營造出濃厚的REBORN世界氛圍，對於喜愛本作宇宙與角色的玩家而言，是專屬於彭哥列家族的黑暗冒險。

Katekyō Hitman Reborn! Kindan no Yami no Delta (Japanese title: 家庭教師ヒットマンREBORN! 禁断の闇のデルタ) is an action-adventure game developed by Marvelous Entertainment and released in 2009 for the Nintendo Wii. Based on Akira Amano’s popular shonen manga Katekyō Hitman Reborn!, the game is part of the anime-based game series. However, unlike its predecessors—which focused primarily on versus battles or light adventure elements—this installment features a more expansive structure, combining original storytelling with 3D action combat.

The story is completely original and does not follow the main arcs of the manga or anime. It is set in a mysterious dimension known as the “Triangle of Darkness,” a surreal realm formed by three types of dark energy, teeming with danger and uncertainty. Tsunayoshi Sawada (Tsuna) and his allies are drawn into this otherworldly space due to a temporal distortion. Within it, they must face off against clones and bizarre enemies born from dark energy—foes that not only mimic their appearance and abilities but also wield a forbidden power that poses a grave threat to Namimori Town and the future. Tsuna and the Vongola family members delve deep into this unknown realm to uncover the secrets behind the Triangle and rescue their trapped companions.

Gameplay features multiple playable characters, each equipped with their own unique abilities and weapons—for example, Tsuna’s X BURNER and Gokudera’s rocket bombs. Combat is third-person and action-oriented, with players using the Wii Remote to execute attacks and dodges. Players can also activate powerful techniques by triggering "Flame Drive" or "Special Move Mode," which unleash cinematic finishers with dramatic flair. Stages are made up of enclosed zones and 3D maze-like environments, requiring players to explore, battle, solve mechanisms, defeat bosses, and collect key items to progress through the story.

Beyond action elements, the game includes cutscenes and voiced dialogues that offer fans a rich interactive experience. Character interactions preserve the tone of the original work—for instance, Tsuna’s hesitation, Gokudera’s loyalty, and Hibari’s aloofness are all expressed through story scenes and in-battle reactions. Visually, the game uses a semi-cel-shaded style that captures the essence of the manga’s line work while blending it with 3D modeling to add dynamic movement to battles. The original anime voice cast returns for the game, enhancing immersion and authenticity.

In terms of reception, the game was met with mixed to average reviews. It received a score of 28/40 from Japan’s Famitsu magazine. Reviewers praised the originality of the story concept and the high fidelity of character representation, noting that it was a sincere offering for fans of the series. However, criticisms included repetitive gameplay and a sluggish pacing—particularly during the maze exploration segments, which some players found tiring. Additionally, while the combat system featured creative ideas, its execution felt a bit rough, lacking the polish seen in more refined action titles. As a result, the game may not hold strong appeal for general audiences but still offers a rewarding experience for dedicated REBORN! fans.

Overall, Katekyō Hitman Reborn! Kindan no Yami no Delta is a fan-focused action title that blends the appeal of the anime series with the motion-based features of the Wii. Although the game leaves room for improvement in terms of mechanical depth and level design, it successfully captures the tone and world of REBORN!. For players who love the universe and its characters, it delivers a unique “dark adventure” centered around the Vongola family.