Rystonian is not yet ready to be an official language of Rystonia, though it is close. It is a West Germanic language in the Anglo-Frisian branch but it is also very similar to Netherlandic-German. It's kind of inbetween. 

The older videos on the Rystonian youtube channel explaining the grammar are way outdated. A series of videos explaining different aspects of the language will be released soon, since there is too much for one video.

VIDEOS EXPLAINING GRAMMAR WILL BE HERE SOON