There is one called bryceWikipedia:"Bryce is a 3D modeling, rendering and animation program specializing in fractal landscapes. The name is taken from Bryce Canyon — a rugged region with many of the same landscapes that were first simulated with the software"Best for maps i think.For characters i think you should use Max or Maya, but if you want to integrate ur models into a programe try finding something that support a known format that is easily parsed, or you'd have to buy a converter to do so...