While you are having a great time driving your magnificent tractor through the fantastic 2D hill climb maps environment, you can earn levels, which will allow you to unlock new stages and upgrade your tractor. You merely need to accumulate points in order to purchase any tractor; there is no cost associated with doing so. tractor driving, 2D racing, hill climb, upgrade, mobile game, web game, driving game, racing game, HTML5, 2D, single player, 1 player, racing