Critical Mass

You have four days to stop a madman from firing five thermonuclear missiles at eighty locations in major cities around the world. Everything you do takes time, including flying from city to city, riding cabs when you get there, and even stopping to think about your next move. Your biggest challenge, aside from moving quickly, is figuring out in what order to visit the cities, and, once there, deciding where to go. - The Book of Adventure Games II