『ケイト・ウェスト：消えたファイル』(Cate West - The Vanishing Files) is an adventure game developed and published by Big Blue Bubble for the Nintendo DS. It is the first game in the Cate West series. Players take on the role of Cate West, a writer and amateur detective who must solve a series of mysterious disappearances. The game is played from a first-person perspective, with players exploring various locations and gathering evidence. As the investigation progresses, Cate discovers that the disappearances are being caused by a mysterious figure known as the Visionary. To stop the Visionary, Cate must solve puzzles and use her 'visionary power' to uncover the truth behind the disappearances. The game features a variety of puzzles, including logic and pattern-based puzzles, as well as hidden object games. The game also features an original soundtrack and voice acting.『ケイト・ウェスト：消えたファイル』is an exciting adventure game that will challenge players with its puzzles and thrilling storyline. With its unique premise and engaging gameplay, it is sure to be a hit with fans of the genre.