Neither one. What's new, xtians will say anything fun is "of the Devil", we are not based on their paranoias.
https://www.satanisgod.org/www.angelfire.com/empire/serpentis666/Subliminal.html
If you've seriously never played or read of it, no, D&D is not Satanic. It blatantly blasphemies many of the Gods such as calling Asmodeus an "evil" god, and using typical xian lies of demons and angels.
Of course that's just the actual lore. You're also able to just make your own setting free of this blasphemy, if you really want to play. But there's nothing "satanic" about it.
Xians only called it such in the Satanic panic, because it "taught magic" which is just typical xian retardation.
You really need to read the main JoS site to understand what's actually Spiritually Satanic.