||Learn the engineering skills to successfully build bridges out of a variety of materials. Once your bridge is completed, you can then test them under stress conditions with wind, water, and a train moving across. As you watch, the vehicles will either pass over safely or plummets into the river below depending on your design. Pontifex II uses physics which allows for many different types of bridges to be built and tested. The 3D graphics engine allows you to view your bridge from any angle including a first-person train view.