The fun physics-based Truck Loader series continues. In the fourth installment it's your job to lade the giant transportation…The fun physics-based Truck Loader series continues. In the fourth installment it's your job to lade the giant transportation vehicle with cargo. Move your forklift through the warehouse, turn switches to open doors and grab boxes with your magnetic grappler. Complete in best time possible to win a higher score. Enjoy Truck Loader 4.