I was skeptical... I shouldnt have been.

I was actually really skeptical about this game. First person shooters dont work all that well on the phone. Boy was I wrong. It actually works out really well. Maybe because of the aim assist which is basically aimbot but still. This plays smoothly on my 4s, and controls are nice and easy. Ive only been through the first mission but so far its been pretty fun to play. I recommend just getting the Modern Combat pack which contains Modern Combat 3, 4 and 5.

Kidalex18 about Modern Combat 3: Fallen Nation, v1.5.0