Paradox Interactive today announced that a booster pack for Hearts of Iron II: Doomsday named Armageddon, will be released as a download only product for strategy gamers worldwide via Gamer's Gate. The product will be available at the end of March and will retail for $4.99/€4.99. Hearts of Iron II: Doomsday - Armageddon will include two completely new alternative history scenarios, new attachments for Naval units, an Air Naval combat system that radically alters the combat balance, and more. Check full story for details - the first four screenshots have been inserted in our gallery.