Publisher Rhine Games, in cooperation with Monster Theater, will release Mosu-developed side-scrolling action adventure game The Dark Queen of Mortholme for PlayStation 5, Xbox Series, and Switch on December 3, the companies announced. The game was first launched for PC via itch.io on December 16, 2024, followed by Steam on August 15, 2025. The Dark Queen of Mortholme is a short-form narrative game that turns the classic hero’s journey on its head, allowing players to wield the Dark Queen’s devastating attacks, face a relentlessly evolving opponent, and shape an unconventional relationship through their choices.