Complex sentence: The group was founded in November 1980 by Frank Mentzer of TSR, Inc., the original publishers of the Dungeons and Dragons game, to promote quality roleplaying and to allow fans of roleplaying games to meet and play games with each other.
Split into simpler sentences: The group was founded in November 1980 by Frank Mentzer of TSR, Inc., the original publishers of the Dungeons and Dragons game. It was created to promote quality roleplaying and to allow fans of roleplaying games to meet and play games with each other.