Arsenal of Democracy is a 2010 grand strategy video game developed by BL-Logic and published by Paradox Interactive for Microsoft Windows.

[1] As in other games in the grand strategy Hearts of Iron series, Arsenal of Democracy allows for the player take control of and manage nearly any World War II and early Cold War era nation-state including its political, diplomatic, espionage, economic, military, and technological aspects.

[2] Arsenal of Democracy maintains the general look and feel of the original game,[2] but features a number of changes and improvements over its Armageddon 1.2 starting point.

The purpose and result of these changes was to make the game less management intensive, more user friendly, and, through improving the AI, more challenging.

The production and economic now give user significantly more control and had the result of making the AI more competitive when compared to the original Hearts of Iron II: Armageddon.

The combat mechanics, including attrition algorithms, were completely reworked to better reflect realistic unit behavior and losses.