This is a pretty good topic OP, thanks for posting it.
For something that is such a strong part of Western Civilization, that is the Abrahamic God of Christianity, Judaism, and Islam, the theme or the concept is generally absent from videogames. I think a lot of it relates back, like another poster said, to the basis of many videogames being in Dungeons and Dragons, and while D&D is no satanic worship or something, it's just traditionally been held in the medium to be a more compelling, robust viewpoint. Not that the Abrahamic/Christian/etc 'hell' has ... Orcs and Demagorgons in it, but the character that generally appear in a D&D inspired videogame (nearly every fantasy game for the last 30 years) are heavily inspired by that demonic imagery.
Just insofar as it's nothing that's ever been really done or tried, I think it's an interesting concept. Obviously there are some narrative challenges, I mean, can the Archangel Michael really be challenged by a demon if he's got God on his side...? But, insofar as this has been a theme in art for, literally, thousands of years, I don't think that it's a stretch to say that some medium that's been around for 40 years couldn't realistically take a stab at it.
I think this could generally be expanded to religion in general, as there are almost no sympathetic or positive representations of mainstream religious people in videogames, at least, in the last 15 years. Any game that has any religious theme in it, whether it's Skyrim, Fallout, Witcher, Assassins Creed, etc., religious people are universally bad guys, and good guys are typically world weary outsiders, if they're religious then they're religious exiles -- victims of the evil religious overlord. If there are religious people, they're more or less accidentally religious, or they don't really believe, or their religion is more of a Abrahamic-tinged humanism. There is one mainstream exception to this, and it's Red Dead Redemption: Undead Nightmare. There is a nun in this game who is not portrayed as an evil bad guy raising the dead, she's
actually a good guy, she's
actually a badass, and she's
actually a Catholic nun. She's not some world-weary humanist who takes the habit just to stick it to the evil Catholic Church, the game doesn't wade into any of that. She's not a hapless fool thanking God for his do-goodery when it's actually you the protagonist doing good (as the Nun is portrayed in the mainline RDR story, basically another antagonistic swindler who doesn't give John Marston his due). She's honest to goodness, a religious nun, who is a hero. And I think it's the only portrayal in contemporary videogames of an honestly Catholic character who isn't an evil bad guy.
You're right, nothing creative that glorifies the Christian god feels anything but icky, boring, or both.
