It's written in English, but most of the jokes are dependent on Scandinavian history or stereotypes, so the author often puts blurbs at the bottom to explain the background for it. And you're thinking: "If you have to explain the joke, it's not going to be funny any more." BUT IT IS. One of my favorites: http://satwcomic.com/coat-of-arms
The art is also adorable: a very simple, clean style that's nonetheless very engaging. The occasional semi-realistic portraits of the cast are also lovely -- the artist has a lot of talent.