|Killing Floor 2 Official Community map|
Infernal Realm is a Killing Floor 2 map. It is a community-made map that was added in the main game as a part of Tactical Response update.
Promo Page Description
"Go to hell! Literally! The new Infernal Realm level, which is a community map that has become an official map, takes survivors to a whole new level of Zed killing surrounded by bones, hanging corpses, brimstone, and hellfire. And the trader is totem made of bones. That can’t be a good sign."