Each of these 4K wallpapers (that's 3840x2160, pixel fans) has been set to a desktop-friendly 16:9 aspect ratio, and with minimal compression so they look super sharp on your monitor.

If you want a neat desktop without Wallpaper Engine, Andy's list of beautiful 4K gaming wallpapers is strong, but if you have the software, here are some of my favourite Wallpaper Engine wallpapers.