Hearts of Iron III: Semper Fi

Hearts of Iron III: Semper Fi is first expansion to the grand strategy game Hearts of Iron III and requires the original game to play. In the expansion the players can define their own theaters with a drag box system. At game start, each country now gets to choose its own hidden victory conditions. A new order of battle browser and a new air superiority map mode has been added to the game and command hierarchy is now directly represented on the map.

The expansion allows HQs under AI control to have separate aggressiveness stances for land, air and naval operations. Countries can request specific actions from their allies for cooperation and technological progress can be shared with your allies. The expansion also has an improved AI that can now launch multi-stage invasions, perform more diplomacy and hold a strategic production strategy.