Solemn Lament first appeared in Lobotomy Corporation as E.G.O equipment extracted from the Funeral of the Dead Butterflies abnormality, then returned in Library of Ruina as a usable combat tool. Both games by South Korean studio Project Moon built a cult following for their dark lore and distinctive audio, and clips of signature weapons spread through fan edits, wikis and soundboards. The gunshot remains popular because it is tied to a memorable abnormality and does not sound like a generic stock shot.