Requiem: Avenging Angel within the game manual with a Biblical quote. For example, one of Malachi's attacking powers turns an enemy into a statue of salt. This power is explained via the following quote: "But Lot's wife looked back from behind him and she became a pillar of salt. - Genesis 19:26." Certain locations have followed this theme too, with humanity's starship named Leviathan after a sea monster from the Old Testament. The game's concept and premise were heavily inspired by John Milton's poem "Paradise Lost". In contrast to the interconnected world seen in the final game, early in development the plan was
Transjordan in the Bible have the wrong ethnicity, but are "within the boundary of the 'pure' geographical location." According to Genesis, (), Ammon and Moab were born to Lot and Lot's younger and elder daughters, respectively, in the aftermath of the destruction of Sodom and Gomorrah. The Bible refers to both the Ammonites and Moabites as the "children of Lot". Throughout the Bible, the Ammonites and Israelites are portrayed as mutual antagonists. During the Exodus, the Israelites were prohibited by the Ammonites from passing through their lands (). In the Book of Judges, the Ammonites work with Eglon, king of the Moabites against Israel.