Killhouse is the name of one of the new Maps included in the Call of Duty 4 Variety Map Pack. The Killhouse map is similar in design to the first "training level" in the single-player mode of the game. The main landmark on Killhouse is a large industrial warehouse. The warehouse resembles some sort of military training facility, containing structures like wooden barricades, a lookout tower, various platforms with mounted cameras and minimal "rooms" with no cieling. Additionally, outside of the warehouse there is an unaccessible area with a fairly large grass field, wooden boxes and a two-story building. Killhouse is structured in a small "cage match" style, best for small team games and deathmatch. It can only be played in the Team Tactical, and Cage Match modes. The Variety Map Pack was included with the release of the "Game of the Year Edition" of Call of Duty 4 on April 1, 2008 and also as a separate download over Xbox Live Marketplace on April 10, 2008 for 800 MS Points.

1. Killhouse
2. Creek
3. Chinatown
4. Broadcast