keiserriker
Keiserriker is not a widely recognized historical term. It appears to be a misspelling or variant of Kaiserreich, a German word meaning "emperor's realm" or "empire." The standard German form is Kaiserreich; some languages render it similarly.
In historical usage, Kaiserreich most often refers to the German Empire established in 1871 under Kaiser Wilhelm
In culture and media, Kaiserreich appears in alternate history and fiction. It is used as a concept
If you meant a specific project, region, or fictional setting named "Keiserriker," please provide more details,