The idea of this game is to ship the crates to another place. You need to ensure that you deliver the required crates to its destination or you will certainly fail the game. Yes, it can’t be help that some of the crates will be falling out of your truck, but you can minimize it by driving carefully.
The game is played with a keyboard. Drive as fast as you can, but always keep in mind that safety comes first before anything else. Try to use the brakes whenever possible as if will keep you and the crates safe. The crates that fell out of your truck can’t be retrieve so just keep going until you reach your destination.