Keep out - Final render
Keep out - Cycles test render
Keep out - EEVEE viewport
Keep out - EEVEE viewport 2
My latest personal piece, Created in blender 2.79.2 and ported to 2.80.5 to render with the upcoming realtime render engine "EEVEE".
Render time was 2 minutes only (maximum quality + procedural noise fog on a low-end intel HD Graphics).