funny, I've never come across anyone, christian or otherwise, who bought into this satans game business. Still, I never played in the 80s. I have had in my group a fundamentalist Christian, my wife follows the charismatic paths of Catholicism and so on. Yet they all put aside differences to pretend to be elves and kill the evil guy.
Lucky for you.
My mother and the pastor of my church publicly humiliated me in front of a Bible study group when I was a junior in high school. My books were confiscated (I had them hidden) and they were taken to be burnt. I had stuff in there from 1981 or so all the way to 1993.
The burning scene in the tract wasn't as far-fetched as it seems. Which is rather scary.
To this day the pastor of that church will preach about the evils of fantasy literature, D&D and Star Wars.