With so many World War II games out there, many gamers took it as a breath of fresh air to see Call of Duty 4 take place in modern times. After all, with modern times come modern weapons and modern technology. Combine those two things and what do you get? Yes, you get C4. The above gameplay video showcases the use of C4 (handily controlled by a remote) in Call of Duty 4. Suffice it to say, it looks like some good ol' fashioned explosive fun. And don't think it's all just for giggles either. You get an achievement for downing two enemies by blowing up a car, so this is serious business.