Most of the scenes in this movie, from the ground of the moon to the mine pits and minecarts, are virtualized on the computer. In this film with a total investment of only 7.5 million euros, about half of the scenes were shot in front of the green screen and the background was added in post-production. Other scenes shot in real scenes were also post-produced using computers. In "Iron Sky", some of the more complex scenes were divided into multiple "components" during shooting, and they were shot separately in front of the green screen. Then, these video materials will be collected, put together on a computer, and rendered to ensure the natural transition of tones between different components and eliminate the traces of stitching.
In "Iron Sky", there are more than 20 kinds of heavy equipment used by the Nazis for lunar activities, including 6 different spacecraft. Among these weapons and equipment, only three-wheeled motorcycles and "Beetle" cars were derived from German vehicles during the "World War II" period, while most of the equipment including the "Twilight of the Gods" giant space battleship and the "flying saucer" are fictitious.
