《航海王 無限冒險》（日文：ワンピース アンリミテッドアドベンチャー，英文：One Piece: Unlimited Adventure）是由Bandai Namco Games開發並於2007年在Wii平台發行的動作冒險遊戲。是以尾田榮一郎創作的超人氣漫畫《ONE PIECE》為基礎，首次針對Wii平台量身打造的原創劇情作品。透過全3D化的島嶼探索、豐富角色操作與原作聲優陣容，再加上Wii體感操作，成為當時粉絲十分關注的作品。

劇情方面，設定在草帽海賊團漂流至未知島嶼後展開。魯夫一行人在航行途中，無意間發現一顆閃耀著神祕光芒的寶石，並被吸引至充滿古代遺跡、危險怪物與神秘能量的無人島。為尋找離開這座島的方法，魯夫與夥伴們展開探索，同時發現島上隱藏著「古代文明遺產」與「封印的力量」。劇情是全新創作，並非直接改編漫畫篇章，因此對原作粉絲與新玩家都帶有新鮮感。過程中還會與來自《ONE PIECE》不同時期的宿敵角色對戰，如克洛克達爾、艾尼路、魯奇等，藉由原作知名角色登場交織出熟悉又陌生的冒險故事。

在操作系統上，支援Wii遙控器加Nunchuk的雙手操作方式，可以自由操控魯夫與其他草帽海賊團成員探索島嶼。基本動作包含跑步、跳躍、攀爬、游泳與挖掘，並可使用角色特技，例如魯夫能伸長手臂攻擊與抓物、索隆使用三刀流砍擊障礙、娜美能召喚雷雲、騙人布射擊遠方目標等，每位角色皆有獨特技能。戰鬥系統為即時動作制，透過Wii遙控器揮動進行攻擊、格擋或施放特殊招式，符合角色個性設計，讓玩家實際體驗體感揮拳與招式連段的爽快感。

關卡設計上，整座島嶼可自由探索，地圖依不同區域區分成沙漠、森林、洞窟、瀑布、火山、古代遺跡等主題，每區皆有特定地形機關、隱藏寶藏與怪物。玩家需善用角色能力破解謎題、開啟通道，並且收集素材、釣魚、挖掘與調查古代碑文，逐步揭露島嶼的秘密。特別的是，島上隱藏許多挑戰任務與強敵，需要玩家強化角色、鍛鍊技巧才能克服。

除主線冒險，還內建「對戰模式」，能選擇多位原作角色進行1對1或團體對戰，並加入角色技能升級、裝備系統，讓角色越戰越強。部分隱藏角色與Boss需在冒險模式達成特定條件才能解鎖，增強遊戲耐玩度。

在市場評價方面，獲得不少粉絲肯定。許多評論稱讚本作完全呈現《ONE PIECE》世界觀，角色表現忠於原作，聲優表現與過場演出也相當用心。3D自由探索與體感操作的搭配，能夠更直覺地代入角色，尤其是利用Wii體感揮拳、投擲、釣魚的設計，被認為是當時Wii平台動漫改編遊戲中的亮點。

不過在部分專業評論與一般玩家間，仍存在一些批評聲音。主要集中在遊戲節奏稍慢、地圖重複度偏高、敵人AI單純與鏡頭運鏡偶有不便。戰鬥系統雖具趣味，但在動作手感與動作種類上略顯單調，對非粉絲玩家吸引力稍弱。此外，雖然角色眾多，但可操作角色初期較少，需要逐步解鎖，讓部分玩家認為前期內容偏向單調。

總結來說，這是為粉絲量身打造、忠實還原漫畫風格的動作冒險遊戲。雖然在部分系統平衡與動作流暢度上仍有提升空間，但憑藉著原創劇情、多樣角色技能、自由探索島嶼與體感操作，讓本作成為Wii平台上最具代表性的《ONE PIECE》作品之一。對於喜愛《航海王》世界觀、角色以及動作冒險玩法的玩家來說，是值得嘗試的佳作。

One Piece: Unlimited Adventure (Japanese: ワンピース アンリミテッドアドベンチャー, English: One Piece: Unlimited Adventure) is an action-adventure game developed by Bandai Namco Games and released for the Wii platform in 2007. Based on Eiichiro Oda’s immensely popular manga ONE PIECE, it was the first original story created specifically for the Wii, featuring fully 3D island exploration, a rich cast of playable characters, the original voice cast from the anime, and motion control gameplay — making it a highly anticipated title for fans at the time.

In terms of story, the game is set after the Straw Hat Pirates drift ashore on an unknown island. During their voyage, Luffy and his crew come across a mysterious, glowing jewel, which draws them to an uninhabited island filled with ancient ruins, dangerous monsters, and strange energies. In order to find a way off the island, Luffy and his friends embark on an exploratory adventure, discovering hidden “ancient civilization relics” and a “sealed power” along the way. The story is an original creation and not a direct adaptation of any manga arc, offering a fresh experience for both long-time fans and newcomers. Throughout the adventure, players will also encounter iconic antagonists from different points in ONE PIECE history — such as Crocodile, Enel, and Rob Lucci — weaving a familiar yet brand-new adventure through the appearances of these well-known characters.

In terms of controls, the game makes full use of the Wii Remote and Nunchuk’s dual-handed operation, allowing players to freely control Luffy and the other Straw Hat crew members as they explore the island. Basic actions include running, jumping, climbing, swimming, and digging, alongside each character’s unique abilities. For example, Luffy can stretch his arms to attack or grab objects, Zoro can use his three-sword style to cut obstacles, Nami can summon lightning clouds, and Usopp can shoot targets from a distance. Every character comes with distinct, specialized abilities. The combat system is real-time action-based, requiring players to swing the Wii Remote for attacks, blocks, and special moves — designed to suit each character’s unique fighting style — offering a thrilling experience of physically swinging punches and chaining combos through motion controls.

For level design, the entire island can be freely explored, with maps divided into themed regions such as deserts, forests, caves, waterfalls, volcanoes, and ancient ruins. Each area features unique terrain mechanisms, hidden treasures, and monsters. Players must make strategic use of character abilities to solve puzzles, open new paths, and collect materials, as well as fish, dig, and investigate ancient inscriptions to gradually uncover the island’s secrets. The island is also filled with challenge missions and powerful enemies that require players to enhance their characters and hone their skills in order to overcome.

Aside from the main adventure, the game also features a Battle Mode, where players can select various original characters for 1v1 or team-based fights. This mode includes character skill upgrades and equipment systems, allowing fighters to grow stronger over time. Some hidden characters and bosses can only be unlocked by meeting certain conditions in Adventure Mode, increasing the game’s replay value.

In terms of market reception, the game received considerable praise from ONE PIECE fans. Many reviewers commended its faithful recreation of the ONE PIECE world, character performances that stayed true to the original, and well-crafted cutscenes enhanced by the anime’s voice cast. The combination of 3D free-roaming exploration and motion controls allowed for an intuitive sense of immersion, with features like motion-controlled punching, throwing, and fishing seen as standout highlights among anime-based Wii titles of the time.

However, there were also criticisms among professional reviewers and some general players. The main points of feedback included a somewhat slow game pace, repetitive map designs, simple enemy AI, and occasional awkwardness with camera angles. While the combat system was fun, the variety and feel of actions were considered somewhat limited, making it less appealing to players unfamiliar with ONE PIECE. Additionally, although the game features a large character roster, only a few are available in the early stages, with others needing to be unlocked gradually — leading some players to feel that the early game content was a bit too simplistic.

In conclusion, One Piece: Unlimited Adventure is a fan-oriented action-adventure game that faithfully captures the manga’s art style and world-building. While there’s room for improvement in terms of system balance and combat fluidity, its original story, diverse character abilities, open-island exploration, and motion-based gameplay made it one of the most notable ONE PIECE titles on the Wii platform. For players who love the ONE PIECE universe, its characters, and action-adventure gameplay, this is a worthwhile and enjoyable title to experience.