Shoujo Yuuhei

Shoujo Yuuhei (Imprisoned Girl) combines visual novel storytelling with action-puzzle gameplay. Players navigate scenarios where the goal is to rescue a princess while dealing with hostile rats. During the puzzle segments, players must drop and collect unconscious rats, some of which carry keys needed to unlock doors. Care must be taken to avoid conscious rats, which can chase and kill the player.

Progress alternates between text-based visual novel elements and action-puzzle stages, with success in the puzzles necessary to advance the story.