A mailman’s job is to deliver the mail at all cost. And in this game, you will ride a truck to collect and deliver some mail. Drive across several gorge and try not to fall in it. If you fall down then it one of your lives will be lost. You have 10 lives that you can use on all the levels.
However, gorge is not the least of your worry as you need to worry about some obstacles that might flip your truck on its back like boxes and other obstacles scattered on the road. If you land on your back, you have a chance to get back on the road (at least, until you have enough health to continue the journey.