To begin with, there is only one level available in the beginning, and you have to get enough money to unlock the next ones. Even so, you can have moderate amounts of fun with it under the right conditions.
The game aims to be a simulator when it comes to physics and handling, but there are just too many things wrong with it for that to be the case. Truck Driver 3D is a simulator that challenges you to drive through challenging environments while trying not to drop the load you are carrying. Deliver fragile cargo without damaging it Hence, a lot of patience and care are required in order avoid accidents and get the cargo to destination. Things get even more difficult if the terrain is in poor condition, such is the case in rural areas, or around construction sites.
Driving a car is stressful enough under normal conditions, let alone when you have to transport precious goods using a heavy truck.