Planetarian: Chiisana Hoshi no Yume is a visual novel developed by Key, set in a post-apocalyptic world. The narrative follows a scavenger, referred to as the junker, who discovers a damaged robot in a desolate city. As he remains with the robot, he endeavors to repair the planetarium's projector, exploring themes of hope and connection amidst ruins. The game is suitable for all ages.
Planetarian: The Reverie of a Little Planet is a Japanese post-apocalyptic visual novel developed by Key and is rated for all ages. The story centers on a middle-aged man who comes across a malfunctioning robot in a dead city. The man, known simply as "the junker", stays with this robot for a time and attempts to fix the projector of the planetarium where the story takes place.