Ruvis

Ruvís is a term used in several science fiction works to denote a planetary system and related cultural and technological concepts. In most such narratives, Ruvís refers primarily to a temperate, Earth-sized planet named Ruvís, as well as the civilization that inhabits it. The term has been used in standalone novels, shared-universe anthologies, and role-playing game materials, where authors sometimes decouple details to suit their plots.

Ruvís is described as a terrestrial world with a heterogeneous biota, a moderate climate, and an equatorial belt of megacity ruins. It possesses oceans, a network of river basins, and several orbital satellites. The environment emphasizes sustainability and resilience, with human colonists integrating with the planet's ecosystems.

Ruví civilization features participatory governance and advanced ecological engineering. Social organization blends local councils with interregional assemblies.

The ruví language is sometimes described as polysynthetic or agglutinative, with a syllabary or script called ruvi, used for inscriptions on ruins and contemporary signage in the stories. The language reflects cultural emphasis on landscape and stewardship.

In some narratives, "Ruvis" denotes a secure interstellar communication protocol or data-format named after the planet, used by explorers and institutions within the setting. It is portrayed as robust to interference and adaptable to varying network conditions.

Ruvís has appeared in various media, including novels, tabletop RPG supplements, and fan-fiction. The term has no single canonical description, and details differ by author, contributing to a flexible canon.