LostMaria: Nameless Flower is a horror role-playing game set in a world rebuilding after the collapse of civilization. When reports of ghosts emerge from the isolated Beolb Mansion, several characters enter the estate for different reasons. Players switch between protagonists, fight supernatural creatures, explore the mansion and nearby town, and uncover the mysteries surrounding Noah and the region’s paranormal activity. The game features character-switching mechanics, cooperative support during battles, multiple endings and a progression system in which organs obtained from defeated enemies can be consumed to improve character statistics.