Elysion is an action-adventure game for the Sega Dreamcast, released on 2002 . You play as Ryouichi Katsuragi, a young doctor who arrives on a mysterious island in Italy to care for an elderly man living in a large mansion. Upon arrival, you can explore the mansion and its surroundings freely, interacting with various characters, including the mansion's maids, who are potential love interests.
The game features a unique blend of exploration and interactive storytelling. During 1st-person perspective mode, you converse with other characters using voice-acting, making choices that affect the story and branching it towards different endings. The game also includes bonus features such as a music player and unlockable heroine gallery, accessible from the main menu.