AppAdvice: Modern Combat 3: Fallen Nation ($6.99) by Gameloft is what you already know it to be: Call of Duty on iOS. In this regard, Gameloft has largely succeeded. This is easily the best game in the Modern Combat series.
The campaign, however, is not the reason to play this game. It’s very cinematic, and there are 13 missions offering hours of gameplay, but overall, it’s a very lackluster experience.