《雷頓的神秘之旅：卡翠愛兒與大富翁的陰謀 DX》（日文名：レイトンミステリージャーニー カトリーエイルと大富豪の陰謀DX，英文名：Layton's Mystery Journey: Katrielle & the Millionaires’ Conspiracy – Deluxe Edition）是由日本Level-5開發，於2019年在Switch平台推出的推理冒險遊戲，屬於《雷頓教授》系列的延伸作品。原本在2017年登陸3DS與智慧型手機平台，此次Switch版為強化重製版，不僅在解析度與介面上進行最佳化，亦內建過去DLC的附加服裝與額外謎題，並針對主機操作方式重新設計UI，呈現更符合家庭機平台的遊玩體驗。

劇情聚焦於新一代主角——卡翠愛兒．雷頓（Katrielle Layton），她是系列主角雷頓教授的女兒，個性聰穎又充滿活力，立志成為名偵探。故事發生在倫敦，卡翠愛兒與會說話的神秘犬類助手「夏洛」（Sherl）以及她的助手諾亞共同經營一間偵探事務所。她每天接下各式案件，從找回失物到解開謀殺疑雲，一步步累積知名度，並逐漸牽引出一場與倫敦七位財閥有關的龐大陰謀。雖然未像前作般聚焦單一主線謎題，而是採用較偏日常劇情的章節式結構，但隨著劇情推進，多個看似零散的案件最終會環環相扣，串連出與父親失蹤有關的神秘真相，呈現出一場既輕鬆又充滿懸疑感的偵探之旅。

在操作與系統層面，支援手持觸控與TV模式雙重操作，無論使用Joy-Con還是觸控螢幕，都能自由探索畫面中的細節與解謎機關。主打「找尋與解開謎題」，畫面中隱藏許多互動元素與提示，需點擊調查場景，尋找線索、對話證據並解開邏輯謎題。謎題類型多樣，包含數學邏輯、空間推理、排列組合與直覺問題，每道謎題都有特定邏輯與誤導陷阱，講究觀察力與創意思維。隨著主線推進，會在各個案件間解鎖更多支線內容與挑戰題，也可使用「提示幣」系統獲得提示以協助破題。

相對原始版本在視覺與操作流暢度上有明顯提升，角色動畫更加細膩，配音全面支援日文與英文語音選擇，加上精緻的背景畫風與溫暖的音樂，營造出既古典又詼諧的英倫偵探氛圍。主角卡翠愛兒的個性與對白設計偏向幽默與天真，與助手與犯人之間的互動往往帶有溫馨或誇張的戲劇性，塑造出與以往雷頓系列略為不同的節奏與風格，更貼近輕小說或動畫感的敘事表現。

市場評價方面，獲得普遍正面的回應，特別是在系列粉絲與喜愛解謎遊戲的玩家間受到歡迎。評論普遍肯定其優秀的謎題設計、多樣性與角色塑造，尤其是畫面與操作的優化讓本作成為最適合在家中遊玩的版本之一。故事風格雖然比起雷頓教授本傳更為輕鬆與零散，但卡翠愛兒本身的角色魅力與謎題品質仍讓玩家留下良好印象。不過，也有部分老玩家認為本作的敘事重點過於碎片，少了過去雷頓系列一氣呵成的劇情高潮，並指出部分謎題較為簡單或重複，整體挑戰性略有下降。

總結來看，《雷頓的神秘之旅：卡翠愛兒與大富翁的陰謀 DX》是適合全年齡層的休閒推理作品，憑藉豐富謎題與輕鬆詼諧的氛圍成功傳承系列精神。其特有的英倫風格與女性主角的嶄新切入點，為經典品牌注入一股新氣息，無論是系列老粉絲還是首次接觸雷頓世界的新玩家，都能在其中找到屬於自己的樂趣與挑戰。對於喜愛解謎、故事導向與細節探索的Switch玩家來說，是值得嘗試的精緻冒險遊戲。

Layton's Mystery Journey: Katrielle & the Millionaires’ Conspiracy – Deluxe Edition (Japanese title: レイトンミステリージャーニー カトリーエイルと大富豪の陰謀DX) is a mystery adventure game developed by the Japanese studio Level-5, released in 2019 on the Nintendo Switch. It is a spin-off of the Professor Layton series. Originally launched in 2017 for the Nintendo 3DS and smartphones, the Switch version is an enhanced remake that features optimized resolution and interface, bundled DLC outfits and extra puzzles, and a redesigned UI tailored for the home console experience.

The story follows a new protagonist, Katrielle Layton, the intelligent and energetic daughter of Professor Layton. Determined to become a renowned detective, Katrielle runs a detective agency in London alongside her talking dog companion Sherl and her assistant Ernest Greeves. Each day, she takes on a variety of cases—ranging from retrieving lost items to solving murder mysteries—and gradually builds her reputation. As the episodic stories unfold, a greater conspiracy tied to seven influential millionaires in London emerges. Unlike previous Layton games, which focused on a single overarching narrative, this entry adopts a more lighthearted, episodic structure. However, as the story progresses, seemingly disconnected cases begin to interlink, eventually revealing a deeper mystery related to her father’s disappearance.

In terms of gameplay and system mechanics, the game supports both handheld touch controls and TV mode. Players can interact with the world either via Joy-Con or touch screen, freely exploring scenes to uncover clues and solve puzzles. The gameplay centers around discovering and solving puzzles; hidden interactive elements and hints are scattered throughout each scene, requiring players to tap and investigate. The puzzles themselves span a wide range—from logic and spatial reasoning to pattern recognition and intuitive problem-solving. Each puzzle has its own logic and built-in traps, encouraging careful observation and creative thinking. As players progress, they unlock additional side content and bonus challenges. A hint coin system is also available to provide assistance when players get stuck.

Compared to the original release, the Switch version sees significant improvements in both visual fidelity and interface responsiveness. Character animations are more polished, and the game fully supports both Japanese and English voice acting. The refined art style and warm soundtrack combine to create a whimsical, classical British detective atmosphere. Katrielle’s personality and dialogue lean toward the humorous and quirky, and her interactions with assistants and suspects often feature heartfelt or exaggerated moments. This tone distinguishes the game’s pacing and style from previous Layton entries, making it feel closer to a light novel or animated series in storytelling.

In terms of reception, the game received generally positive reviews, particularly from series fans and puzzle-game enthusiasts. Critics praised the quality and variety of its puzzles, as well as the visual upgrades and smoother controls, making it one of the most enjoyable Layton titles to play at home. Although the story structure is more relaxed and episodic compared to the tightly-woven narratives of past games, Katrielle’s charm and the strength of the puzzle design left a positive impression. However, some long-time fans noted that the story lacked the climactic impact of earlier entries and that certain puzzles were too easy or repetitive, slightly lowering the overall challenge.

In conclusion, Layton’s Mystery Journey: Katrielle & the Millionaires’ Conspiracy – Deluxe Edition is a casual, family-friendly mystery game that successfully carries forward the spirit of the Layton franchise. With its rich variety of puzzles, endearing characters, and a uniquely British tone, it introduces a refreshing new perspective through its female lead. Whether you’re a longtime fan of the series or a newcomer exploring the world of Layton for the first time, the game offers an inviting and polished adventure. For Nintendo Switch players who enjoy narrative-driven mysteries and puzzle-solving, this title is a refined and worthwhile experience.