Roller Coaster Kit Build and ride thrilling coasters packed with lifts, high speed twists and lots of loops! Monster Truck Kit Our wildest, loudest app. Smash and crash your way over jumps and mud pits Car Kit Create a bustling town with roads, bridges and buildings. Add cars, trucks, vans, cabs, limos, emergency vehicles Train Kit: Wild West Take your train building skills to the American Frontier Train Kit The original train set game for kids. Build your tracks, add trains then bring your world to life with bridges, tunnels and buildings. Ride the train to explore the world you have created. Train Kit: Space Build a rail network on an alien planet Car Kit: Racing Design a track and start the race!