《復仇精靈》（日版原名：《ファンタズム》/ Phantasm，北美版名稱：《Avenging Spirit》）是由 C.P. Brain 開發、Jaleco 於 1991 年 5 月推出的大型電玩（街機）橫向捲軸動作平台遊戲。遊戲後來也在 1992 年移植至 Game Boy 主機，並在近年陸續登陸各現代主機平台。

作為一款橫向動作遊戲，《復仇精靈》最驚豔的特色莫過於其極具創意的「附身（Possession）」機制。玩家在遊戲開局時扮演的是一個沒有實體的幽靈。由於沒有肉體，玩家的靈力值（Spirit Energy）會隨著時間慢慢流失，這意味著「附身在敵人身上」不僅是攻擊方式，更是延續生命的必要手段。遊戲一開始提供了四種基礎角色供玩家選擇附身，包括槍手、忍者、功夫大師以及魔術師等。

隨著關卡推進，可附身敵人的種類會越來越豐富，從持槍幫派份子、忍者、幽靈女僕、甚至到會發射雷射的機器人或巨型怪獸等應有盡有。每種被附身的角色都擁有完全不同的攻擊方式、移動速度與跳躍高度。當目前附身的角色血量耗盡時，主角的靈魂會被擠出體外，玩家必須在靈力條扣光之前迅速尋找下一個敵人進行附身，這種隨時切換角色與能力的戰術性，為遊戲帶來了極高的變化度與耐玩性。

遊戲的故事帶有一絲悲劇與超自然色彩。男主角與女朋友原本是一對青梅竹馬。某天兩人開心外出時，突然遭到一個神秘犯罪集團的伏擊。歹人不僅強行拐走了女主角，更殘忍地將男主角當場槍殺。

因死不瞑目且掛念女友，男主角的靈魂化為了幽靈留在世間。幸運的是，女主角的父親碰巧是一位專門研究靈體能量（Ghost Energy）的科學家。博士發現了男主角的靈魂，便賦予他操控與附身他人的靈力。

原來，該犯罪集團之所以擄走女主角，正是為了威脅博士交出靈力研究成果以製造強大武器。為了營救愛人並阻止黑幫的陰謀，男主角踏上了借軀復仇的漫長征途。遊戲設計了雙結局機制，玩家必須在特定關卡中收集三把關鍵鑰匙才能成功拯救女友並迎來圓滿結局；若未集齊鑰匙，則會走向無法挽回女友的遺憾結局。

《復仇精靈》在 1990 年代的街機市場中獲得了相當不錯且獨樹一幟的評價。在當時多數動作遊戲仍停留在單純「打打殺殺」的時代，這款作品憑藉著「隨意附身敵方單位」的 前衛概念，讓許多玩家與評論家耳目一新。

雖然遊戲的難度偏高——特別是靈力值的時間限制要求玩家必須隨時維持緊湊的操作節奏——但多元的角色技能與幽默俏皮的像素風格（Pixel Art），大大緩和了緊張感。美版移植至 Game Boy 後雖然受限於硬體而簡化了畫面，卻也因為極佳的操作性成為掌機上的隱藏名作。

總結來說，《復仇精靈》成功將看似沉重的「復仇與超自然」題材，轉化為一款充滿創意與歡樂的操作型動作遊戲，至今仍被許多復古玩家視為 90 年代街機黃金時期最有趣的明珠之一。

Avenging Spirit (released in Japan as Phantasm) is a side-scrolling action platformer developed by C.P. Brain and published by Jaleco for arcades in May 1991. The game was later ported to the Game Boy in 1992 and has been re-released across various modern console platforms in recent years.

As an action platformer, the defining highlight of Avenging Spirit is its highly creative "possession" system.

Players begin the game as a disembodied ghost. Lacking a physical form, the player's Spirit Energy gradually drains over time. This makes possessing enemies not just a combat mechanic, but a vital necessity for survival. At the start of the game, players can choose to possess one of four initial characters, such as a gunman, a ninja, a kung-fu master, or a magician.

As players progress through the stages, the roster of possessable enemies expands significantly—ranging from mobsters with firearms and ninjas to ghost maids, laser-firing robots, and giant monsters. Every possessed entity features distinct attack methods, movement speeds, and jump heights. When the current host's health is depleted, the protagonist's spirit is expelled, forcing the player to quickly find and possess another enemy before their Spirit Energy completely runs out. This constant tactical switching of bodies and abilities gives the game tremendous replayability and variety.

Narrative and Plot Outline

The story carries a touch of supernatural tragedy. The male protagonist and the heroine are childhood sweethearts. One day, while out together, they are ambushed by a mysterious crime syndicate. The thugs forcibly kidnap the heroine and cold-bloodedly shoot the protagonist dead on the spot.

Unable to rest in peace due to his concern for his girlfriend, the protagonist's soul remains in the mortal realm as a ghost. Fortunately, the heroine's father happens to be a scientist researching ghost energy. Discovering the protagonist's spirit, the doctor grants him the power to control and possess the bodies of others.

It turns out the syndicate kidnapped the daughter to blackmail the scientist into handing over his spirit-energy research to build powerful weapons. To rescue his beloved and stop the syndicate's evil scheme, the protagonist embarks on a vengeful journey using the bodies of his enemies. The game features multiple endings: players must collect three hidden keys throughout specific stages to successfully rescue the heroine and achieve the good ending; failing to collect them leads to a tragic conclusion where she cannot be saved.

Market Reception and Legacy

Avenging Spirit received positive and distinctive praise in the 1990s arcade scene. During an era when most action games adhered to straightforward beat-'em-up or run-and-gun formulas, this title refreshed critics and players alike with its forward-thinking concept of freely possessing enemy units.

While the difficulty was relatively high—especially due to the time-sensitive Spirit Energy gauge that demanded a fast-paced playing style—the diverse character skill sets and charmingly playful pixel art effectively balanced the tension. Although the Game Boy port featured simplified graphics due to hardware limitations, its tight controls made it a beloved cult classic on handhelds.

Overall, Avenging Spirit successfully transformed what could have been a dark, supernatural revenge story into a clever and entertaining action game. It remains fondly remembered by retro enthusiasts as one of the most inventive gems of the 1990s arcade golden era.