A courier service makes sure that your package reach you in the shortest amount possible. Yes, there are email service to which we can entrust our letters to nowadays. And they are almost as instant as you want it, but you can't do that to a package as they don't come in digital package too. You need to send them to the courier service and hope that they reach their destination point without any troubles. Well, that is the thing with any tangible object as you can't send them through an email service. You still need to use the old courier service. If you are working in the courier service then this just mean one thing for you and that is you still got your job. Drive your courier van as fast as you can till you get to the package. You need to drop the package at the drop points and head on to the next drop off points. There is a time limit in each package, so you need to drop them off as fast as you can. Remember to drop the package to the same color, so you can go through with another level. Do it over and over to progress in the game.