'Modern Combat 4: Zero Hour' has iPhone gamers out to save the president

Modern Combat 4: Zero Hour, the latest in Gameloft's popular mobile phone first-person shooter series, will have players fighting to save the United States president from a former special operative.

The trailer shows very little in-game play, but does offer a quick run down of the game's plot.

Zero Hour is a sequel to 2011's Modern Combat 3: Fallen Nation, which was developed by Gameloft Montreal, and hit iOS devices in late October to very positive reviews.