s3v3n3 Tools work in most Unity Versions and only require standard Unity features. They support Built-In, URP and HDRP pipelines using almost entirely Unity basic Lit Materials.
Scene Builder is a free utility to quickly setup your scene for a nice preview of your work. It is not required to use the other tools but it is free and you may find it helpful for quickly getting started.
You can find out more about Scene Builder HERE
Road Builder is available for purchase and is an Editor Add-On that will build a nearly infinite variety of Street Layouts that make sense. There are many options besides the basic Road Layout feature. You can even add your own models or edit the existing models to suit your taste.
Roads layouts are created in your scene in seconds and can be removed or saved quickly. Models generally have low poly counts and are very frame count friendly so can be used for almost any application desired.
You can find out more about Road Builder HERE
Each of our Editor tools comes with fully exposed code and some help and suggestions for those who may want to customize the code or make any other modifications.