40% of the app's user base is Chinese, and many of the reviews on Wallpaper Engine are written by these citizens, who talking about pornographic material.

It’s only a matter of time before Chinese government officials drop the axe on Wallpaper Engine — and Steam as well. While most Chinese internet users require VPNs to get around the firewall ...

But in seventh place sits Wallpaper Engine, which boasts almost 100,000 peak players and 45.2 million hours 'played.' That's a lot of hours for a wallpaper app.

Rare Chinese wallpaper uncovered at Woburn Abbey in Bedfordshire Anglia Bedfordshire Tuesday 15 April 2014, 1:53pm ...