In Cult of Corruption - The Summoning, you are Bo Wyatt, a former slacker who somehow transported into another dimension called the Library. The librarian there gives you a grimoire. Your buddy Ray tricks you and you end up summoning Nergal, a Babylonian God. Bo gets corrupted by Nergal via a spiritual virus. Plus so does his mom. If you can’t fix things soon Nergal and this virus will run the world and everything is getting evil and defiled. But Bo is also a wizard, so maybe he can stop this evil thing from happening. However, it’s kinda dark and there are a lot of weird fetishes that occur in the game, as well as demon rituals, etc.