In 2020 the religion of Islam became the #1 most commonly practiced religion in the world, with almost 4billion worshippers throughout the world especially the Middle East and Africa. Europe still remained largely Catholic /Protestant until it became an empire. The Days of Global Darkness took a toll on the practice of religion, when the worshippers prayed to their god(s) to make things better, and things only got worse, they decided that the Divine wasn't actually divine at all and turned their backs their religion. This was frowned upon by religious leaders ( such as the Pope ) who still believed in whatever they believed in. Islamic countries saw a decrease in people actually practicing the religion.