Roadifier is an open-source road mesh generator for Unity.┬áBasically Roadifier takes a list of points and a terrain object and automatically generates a mesh representing a road of the specified width that follow the terrain’s height and normals. It’s great to make roads in strategy games using the standard Unity terrain, and with a couple of changes it could be adapted to make train tracks, rivers and much more!

Source code available here: Roadifier @ GitHub

Early build demo