To improve security, we will soon start forcing password resets for any account that uses a weak password on the next login. If you have a weak password or a defunct email, please update it now to prevent future disruption.
It was made by the Russians circa late 2000's.
It does not take much knowledge of programming languages, just a tit-bit of HTML and a good read of the documentation (its in Russian), which makes it user-friendly and very easy to use.
All in all, as it doesn't take that much effort to create a working game, people will use it. I guess that Russian guys tend to put out more of their work.