It was released in October 1993 by Osmose Productions, and reissued in digipak format on April 4, 2006 by Regain Records, with bonus videos of three songs performed live on August 12, 1993.
It is the first album the band produced in a proper black metal style, as opposed to the blackened death metal approach of their 1992 debut, Dark Endless.
Those of the Unlight is the last Marduk release to feature Joakim Göthberg on drums, as he would purely assume vocal duties by the next studio album, Opus Nocturne. It also the last studio release to have two guitarists, as Devo Andersson was not in Marduk after this release, although he did return in 2004 as the bassist.