Ruttokosmos are one of the great "what if?"s of Finnish black metal. The band formed sometime in 2003 and released the five-song Ja minä näin kuoleman" demo in 2006 and then the six-song "Kärsimys" demo a year later. Afterward, nothing was heard from Ruttokosmos ever again. Only one member concurrently played in Divina Inferis, and the other two members either disappeared and played pseudonymously in other bands.