From time to time, the hero must catch up with the kidnapped scientist Dr. Barnstoff and his voluptuous daughter Jane (the love interest for the game) in a zeppelin. In these encounters the player must engage in dialogue with them (notably for the time, featuring digitized speech) to win their trust. Another part of the game takes the form of a strategy game: from a world map display the player directs five agents to search for hidden Nazi bases and they can also "organise resistance" to slow the enemy's advance towards the USA.