Detail this asset from Unity Asset Store: Original Link
This is a paid asset, but now you can download 1Texture City Free.
Mobile – 1Texture City v1.3 (Latest version)
1Texture City (Mobile City Pack v1.2)
1Texture City includes 350+ mobile friendly prefabs.
Used only 1 texture (1024×1024) and 1 material.
Includes:
● 170+ buildings (residential, office, hospital, police, fire dept., factories, ferris wheel, gas station, retro buildings, shops, mega mall, suburban houses, skyscrapers, airport);
● 41 cars (41 single mesh + 41 separate wheels) – simple and purpose;
● 10 planes;
● road (1,2 lanes) tile constructor;
● city park tile constructor;
● river tile constructor;
● city props.
Average tris count:
● cars: ~200-500 (planes: 1293, 1358, 1407);
● buildings: ~100-1000 (airport – 4615).