Corru

Corru is a living, metallic substance that is grown and shaped by obesk engineers through methods that are currently unclear. Its exact composition is unknown, though one of its food sources is known to be copper.

Black corru
Black corru is a structural variant of corru that forms naturally in spires. It is black in colour with a purple sheen, and possesses far higher density and strength than normal corru.

Corrucysts
Corru naturally grows into spheres called corrucysts, which form a hard outer layer called corrucystic glass that parts for Obesk receptors, allowing the corru within to be taught how to function.

Corrucystic hardware forms the backbone of Obesk technology; their development sparked a revolution that rapidly spread across Obeski, and paved the way for the construction of the Okizika in Ekiva, new advances in medical technology , spaceflight, and more.