Dungeons and Dragons, in itself, is not intrinsically evil. However, it
is capable of being misused and may serve as a vehicle for the occult.
I have not played the game and cannot comment as an insider, but I can
evaluate the results of others, which clearly have demonstrated a link
to the occult under certain conditions.
Any Christian should be mindful of any game that play-acts divinizing rituals.
While many may be able to pretend without investing their will in a summons
of spirits, others may become so enthusiastic that they literally summons
spirits that could possess them or offer some harmful influence.