Hey, sorry for late response, busy with life... Anyway :]
1. Yes, you can get a low poly, very basic terrain. Or if you want you can adjust the details and get a very detailed geometry.
2. Yes, those are just extruded things. On the sides currently there are no textures. I'm using this tool in my own project and my top down camera is quite far away from the ground. So for me, for now this was enough to create this illusion of actual buildings.
3. Single texture. It will reuse your map image you use with the software to create the terrain.
And thank you for being interested in this little project of mine!









