All aboard! You're the engineer in the main switching office of a large transit system. It's up to you to route the train and pick up passengers waiting at the stations. You arrange the sections of track on which your train will travel... but yours in no easy task! Others construct Crazy Trains and come chasing after you! And that's not all... Loop Sweepers crash into you and Crazy Tracks send you off in another direction! There's no telling what can happen!