Environment and objects created and rendered in Blender (Cycless). Grass created witn particle system and hidden in vieport. Grass visible only in render on default. Bushes and trrees created in Speed Tree, and they have many polygons. For more perfoormance in viewport, you can hide trees and bushes, or check this objects to 'display as a box'. In addition to 3D files, you also get the Photoshop (PSD) source file.