You have fun with Plarail.

Plarail is as known as Play-rail. It is plastic rail gauge system and powered by batteries. It includes trains, scenery parts and rail trucks.
You can gauge a huge toy town with these trains, rail trucks and scenery parts. To better rayout, you use scenery parts such as bridges, stations, railroad crossings, signals, train sheds, mountains, car roads, and so on. In addition, the company, Takara tomy, provides various trains that are remodel of real trains. The Shinkansen, commuter trains, even Thomas & Friends and Chuggington. Kids really love them. Not only kids but also adults are fascinated. What is awesome about Plarail is to make layouts. You make a gauge with several loops, you can use sound station with Tomica cars, maybe you can make Thomas World. The layouts plans are available in the webs.