Arsenal of Democracy: A Hearts of Iron Game. The hint is in the title, a Hearts of Iron game. This is not really a game however, Arsenal of Democracy is a free mod available to all Hearts of Iron 2 players and this retail version only has a few minor advantages over the free version.
If you want to know whether this game is for you then you should not be reading this review, rather you should find a review for the regular Hearts of Iron 2, everything said in there is true for this game. With one notable exception however, none of the Hearts of Iron 2 mods will work for this.
It is a strange sense, to pay money for the retail version of a mod only to be denied access to, what is otherwise one of the strongest modding scenes around. Arsenal of Democracy does have some mods available made specifically for this game but they are few and far between and none have the scope or polished quality that is readily available for Hearts of Iron 2.
All in all, do not buy this, simply don't. If you are such a big fan of the genre that you must play every incarnation out there then save yourself some money, go get Hearts of Iron 2 instead and download the Arsenal of Democracy mod free of charge, you won't be missing out on much and should you want a slightly different total conversion of the World War 2 Grand Strategy experience, you simply download another mod.