Iron Cross is a new independently developed expansion for Hearts of Iron II being distributed by Paradox Interactive under their Europa Engine Projects label. The add-on, available through GamersGate, requires ownership of Hearts of Iron 2 Armageddon, Hearts of Iron 2 Complete, or Arsenal of Democracy: A Hearts of Iron Game. Here's how they describe what it offers: "Developed by Irshappa, Iron Cross introduces a completely overhauled map with 4,000 new provinces, fresh scenarios as well an extended playtime of 1933 to 1964. New units and brigades, thousands of historical events, improved AI and an impressive new technology tree will ensure that Iron Cross elevates the Hearts of Iron II playing experience to unprecedented heights."