6. Call of Duty 4's Mile High Club
A quick, short little bonus level unlocked by defeating Call of Duty 4: Modern Warfare and watching till the end of the credits, the Mile High Club mission takes place aboard a huge passenger plane during a very turbulent flight. The bird has been hijacked and it's up to you to rescue all the hostages, defeat all the terrorists, and get all kinds of out of there before the plane explodes. What's sort of funny about this mission is the immense amount of gunfire that take place inside the plane during flight. One bullet through a window would be enough to lose cabin pressure, but a whole squad of guys firing assault weapons? The game compensates for this when an emergency exit door is either blown off or opened. The sound of sucking air hisses by as the entire screen begins to tilt. At the end you blow the last door and jump out into a free-fall. The plane explodes as you tumble away.