X Construction is described as 'Build a bridge with the given amount of materials to let the train safely cross the valley'. There are three games similar to X Construction for a variety of platforms, including iPhone, iPad, Windows, Android and Android Tablet. The best alternative is Cargo Bridge, which is free. Other X Construction like games are Bridge Constructor (Freemium) and Poly Bridge (Paid).
In Bridge Constructor, you can become an accomplished bridge builder without any formal training. Build bridges over deep valleys, canals, or rivers. Stress tests reveal whether the bridge you build can withstand the daily stress of continual use from cars and trucks.