《公主密碼 EX》（Code of Princess EX）是結合動作與角色扮演元素的橫向卷軸遊戲，於2018年在Switch平台推出，由Studio Saizensen開發，Nicalis發行。是2012年3DS遊戲《Code of Princess》的強化版本，不僅對畫面進行HD化，還優化操作、提升遊戲流暢度，並收錄所有原版內容與追加角色，是對原作的全面升級。

劇情圍繞王國公主索蘿潔（Solange）展開。她在王國被魔物與腐敗勢力襲擊後，被迫流亡。為拯救王國與揭開背後的陰謀，索蘿潔踏上旅程，途中結識一群風格迥異的夥伴，包括愛錢如命的盜賊阿里（Ali）、怪異的女僧侶海倫（Helena）、以及行為古怪的吟遊詩人等。他們組成「Code of Princess」小隊，對抗席捲世界的邪惡力量。儘管劇情本身走的是經典奇幻冒險路線，但在對話與角色互動上充滿惡搞與自嘲風格，營造出獨特的幽默氛圍。

在玩法方面，採用橫向動作格鬥結合RPG成長系統的形式。戰鬥畫面分為三條軌道，可在這些軌道間自由切換以躲避攻擊或接近敵人。每個角色皆有獨特的攻擊招式與技能組合，透過連擊與技能可以打出流暢的戰鬥節奏。可以在戰鬥中獲得經驗值、升級角色、分配能力點數與裝備道具，提升戰力。在EX版本中，操作回應與角色平衡性有所優化，讓戰鬥更具節奏感與戰略性，同時也支援本地雙人合作與線上對戰，增加重玩價值。

市場上的評價整體偏向中規中矩。部分媒體與玩家讚賞其豐富的角色陣容、快節奏的戰鬥系統與漫畫風格的角色設計，尤其是原畫師西村キヌ（Kinu Nishimura）打造的人物立繪，充滿90年代街機風格與魅力。此外，遊戲的惡搞風格與角色個性也讓部分玩家覺得相當有趣。然而，批評聲音則集中於遊戲整體節奏稍嫌單調，場景與敵人重複度高，且劇情推進模式略為老派，對於重視現代敘事與視覺表現的玩家而言可能缺乏吸引力。

總體而言，這是具備懷舊風格與爽快打擊感的動作RPG作品，適合喜歡街機風格、多人合作遊戲，以及對奇幻惡搞題材感興趣的玩家。雖然在系統深度與畫面上不如當代大作華麗，但其輕鬆幽默的敘事風格與角色魅力，仍為本作贏得一群忠實擁護者。

Code of Princess EX is a side-scrolling action RPG that combines fast-paced combat with character progression mechanics. Released on the Nintendo Switch in 2018, the game was developed by Studio Saizensen and published by Nicalis. It serves as an enhanced version of the 2012 Nintendo 3DS title Code of Princess, featuring HD visuals, refined controls, improved performance, and all content from the original game along with additional characters. This release is considered a full upgrade of the original title.

The story centers around Princess Solange, who is forced into exile after her kingdom is attacked by monsters and corrupted forces. Determined to save her homeland and uncover the truth behind the growing chaos, Solange sets out on a journey. Along the way, she forms a team known as the "Code of Princess" with a diverse cast of eccentric allies, including the money-obsessed thief Ali, the bizarre nun Helene, and a quirky bard, among others. While the core plot follows a classic fantasy adventure structure, the game distinguishes itself with humorous dialogue, parody elements, and self-aware character interactions, creating a unique and light-hearted tone.

In terms of gameplay, Code of Princess EX blends side-scrolling beat-’em-up action with RPG elements. Combat takes place on three horizontal lanes, allowing players to switch between them to avoid enemy attacks or gain strategic positioning. Each playable character features unique combos and special abilities, enabling fluid and dynamic battles through chained attacks and skill usage. Players earn experience points, level up characters, allocate stat points, and equip gear to increase combat effectiveness. The EX version enhances responsiveness and rebalances characters for a more polished and strategic gameplay experience. The game also supports local co-op and online multiplayer, adding to its replay value.

Reception for Code of Princess EX was generally mixed to positive. Some media outlets and players praised its vibrant character roster, fast-paced combat mechanics, and distinctive anime-style art, especially the character designs by renowned illustrator Kinu Nishimura, which evoke a strong 1990s arcade aesthetic. The game’s humor and quirky personalities were also well-received by fans looking for a more playful experience. However, criticism was directed at its repetitive gameplay loop, limited stage variety, and somewhat dated story progression mechanics. For players accustomed to modern storytelling and visual fidelity, the game may feel a bit old-fashioned.

Overall, Code of Princess EX is a nostalgic and energetic action RPG that appeals to fans of arcade-style gameplay, co-op combat, and fantasy with a comedic twist. While it may not match the visual or mechanical depth of contemporary AAA titles, its charming tone and eccentric cast have earned it a dedicated niche following.