Some of these monsters use up to 30 liters of fuel per minute! If you run out, you know what to do: call the fuel truck, of course. You also have to control the damage to the vehicle and the amount of gas you use. It's a lot of fun, especially when it takes over half an hour for the second truck to arrive. You may even end up getting both trucks stuck and having to use a third truck to pull them both out. If things get too difficult, you can always change vehicles and rescue the one that's stuck in the mud (you'll have to do this many times). Over time, you'll learn how to use the tow cable when you need it, and you can attach the cable to trees to help get you out of any nasty ditches you might get stuck in. You have to drive very carefully not to get stuck, using four-wheel drive and the differential lock properly. These trucks, however, require control so close to that of a real truck, that Spintires is one of the best simulators I've tried in a while.