What is Viseia
Viseia is used to view the reports of the PBEM Eidolon. The client natural language is german, as the server for the Eidolon game is german too. It is based on German Atlantis, which in turn is based on the (english) Atlantis game.
As everything on Eidolon is in german language, you have to understand german anyway to play Eidolon.