Torment: Tides of Numenera is an upcoming RPG in development by inXile Entertainment for Microsoft Windows, OS X, Linux, Xbox One and PlayStation 4, serving as a spiritual successor to Planescape: Torment. Numenera is set in the distant future, where the rise and fall of countless civilizations have left Earth in a roughly medieval state, with most of humanity living in simple settlements, surrounded by relics of the mysterious past. The current age is called the "Ninth World" by its scholars, who believe that eight great ages existed and were destroyed or disappeared for unknown reasons before their time, leaving ruins and various oddities and artifacts behind. These artifacts are known as the "numenera" and represent what is left of the science and technology of these past civilizations. Many of them are irreparably broken, but some are still able to function in ways that are beyond the level of understanding of most humans, who believe these objects to be magical in nature.