"Xenosaga Episode I: Der Wille zur Macht" is a role-playing video game developed by Monolith Soft and released for the PlayStation 2 in 2002. It is the first installment in the Xenosaga series and features a blend of science fiction and philosophical themes. Players control a group of characters, including Shion Uzuki and KOS-MOS, as they navigate a complex narrative involving the struggle against the Gnosis, mysterious beings threatening humanity. The game combines traditional turn-based combat with exploration and puzzle-solving elements. It is known for its deep storytelling, character development, and cinematic cutscenes, which contribute to its immersive experience. The game also explores themes of existence, consciousness, and the nature of humanity, making it a thought-provoking title in the RPG genre.