“It was all very well going on about pure logic and how the universe was ruled by logic and the harmony of numbers, but the plain fact of the matter was that the Disc was manifestly traversing space on the back of a giant turtle and the gods had a habit of going round to atheists’ houses and smashing their windows.”
-Terry Prachett, the Colour of Magic.
There are several different belief systems in Mannsheim, the most common is Celesté cinq closely followed by Sem’ya. Nearly everyone is a religious and may very well be ostracised for not being religious enough, you would not want to incur the wrath of the gods by associating with one of those now would you. The religions are as follows: