Sony's subsidiary studio, Guerrilla Games, has joined forces with South Korea's NCSOFT to co-develop a new MMORPG within the 'Horizon' franchise, named 'Horizon: Call of the Mountain', and has officially unveiled a teaser. The game is set in the world of mechanical hunters from the Deadlands, maintaining the core hunting mechanics that define the 'Horizon' series while integrating cutting-edge MMORPG features. This new title will be accessible across iOS, Android, and PC platforms, with further details set to be disclosed in due course.

Rumors of a partnership between the two companies first surfaced in November 2022, initially suggesting a mobile game endeavor. Furthermore, NCSOFT and Sony Interactive Entertainment (SIE) have declared the formation of a strategic alliance aimed at fostering extensive collaboration in global business ventures, particularly within the mobile gaming sector.