This is an example of the train with carrieges. Also could be used for a game like a "snake" or any kind of vehicles with a trailer. A train has a strenght of engine, strenght of braking, maximum speed and own weight. Every carriege has its own weight, if the strenght of tranin′s engine is more then the sum of all carrieges - the train will go. The less is the weights of carrieges, the faster will train accelerate and the less will be the braking distance.
Controls: hold W to start move. hold S to brake