At a Q&A, director Steffen Haars said Krazy House was filmed in sequence over 22 days.
The set of the movie is reminiscent of "Married with children"
Bernie having a British accent was Nick Frost's suggestion, with the original idea being that the actor playing Bernie is British and the accent slips once the Russians come in as they are not a part of the script. The idea was not approved by the directors until 18 days into the shoot.
The English language debut of Steffen Haars and Flip Van der Kull.
In the original script the Jesus figurine being shoved up Piotr's anus was on camera.