Iron Sky: Invasion is an official video game expansion of the 2012 Finnish science fiction comedy Iron Sky. The game is developed by Reality Pump Studios, and is published by TopWare Interactive. Iron Sky: Invasion is a space fighter simulator, enhanced with strategic and RPG elements, set in the universe of Iron Sky and expanding upon its foundations. The core of the gameplay is based on ship-to-ship dogfights, combined with assaults on giant spaceships (such as the space Zeppelins, portrayed in the film), as well as tactical thinking and resource management.