Doom II: Unholy Realms is a Doom II megawad released by Brian Knox (Snakes) in 2013. The game features 32 limit-removing layouts, new textures and new MIDI music. This WAD was one of the winners of the Doomworld's 2013 Cacowards.

It's all gone to hell again. Earth's reality is being torn from itself and merged in the vision of the Icon of Sin. Locations have been stripped from this very dimension. It's only a matter of time before all is corrupted and transformed into a twisted version of reality. All that stands in the way of total apocalypse is a marine, a pistol, and 50 bullets.

Dimon12321 completes all levels in this megawad using Ultra-Violence difficulty, which is the most common skill level used in the Doom speedrunning and TAS community.

VOLUME WARNING: There are three instances of a very loud noise playing at 4:10 (the end of Death level), 7:21 (the end of Rite of Passage level) and at 11:30 (the end of Dis level) in the encodes. Please lower your volume beforehand. The encodes warn before those sounds play.