Hello, I am newbie game developer and trying to learn unreal engine for couple of months now. I want to make an urban game. To do that I need to build to a city consists of many different types of buildings. Actually I want to create a 3d city almost exactly like a real world city in unreal engine 4(priority) or blender.
So here are my requirements for the software/tool-
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Helps to make different types of building easily so I can use those buildings in my game as static mesh.
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(not necessary but this will really help me a lot) Can import building models from google earth or google map to the software or blender or ue4.
- b) Is there any other software other than sketchup which can import 3d buildings from google earth? I didn’t find any blender plugin that can.
3) Free, because I won’t be able to buy, at least not soon enough.
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Must be standalone, or blender plugin/tool. If standalone, must be able to export to Blender(or other free 3d software) and Unreal engine 4.
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(not necessary but will be better) helps to make different shapes of roads
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(not necessary but will be better) helps to make realistic terrain and/or trees.
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tutorials- If you can guide me to a tutorial about easily making different buildings that can help too.
So here is what I found so far
skyscraper- I could not find any youtube tutorials for it, is it not popular?
blended cities- it doesn’t seem good enough 
maybe because of insufficient tutorials?
city engine and suicidator city generator- both are paid software. only trial versions are available, and I don’t want to use trial versions because of license issues.
ghosttown and building generator- both are plugins for 3ds max and I can not afford 3ds max or maya3d. and I don’t want to use them as student account because of license issues.
video copilot’s metropolitan, element 3d, jetstrike all seems awesome, blowed my gaming mind. But again they are not free 
. Metropolitan has many style of buildings, textures, roads etc. You might consider it buying if you have money.
tutorials- here is a google sketchup tutorial where it is possible to create a city directly from google earth. But the problem is sketchup advanced is not free.
blender city tutorial- this and this are decent. but I want to if there is an even better way.
i liked videos like this
so, post anything helpful regarding this topic, any tips, any tutorials, any criticism. i just need to make a large city. 
thanks in advance