Meta Horizon Worlds is an online multiplayer game, as well as game platform and game creation system, developed and published by Meta Platforms. Horizon Worlds was released in December 2021. Initially designed for virtual reality headsets as part of the QuestVR platform, a mobile version was released in September 2023, and in February 2026 Meta announced it would separate Worlds from QuestVR to primarily focus on the mobile version. In March, Meta announced that no new games would be added to the VR version.