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Message: <blockquote data-quote="Libramarian" data-source="post: 6068928" data-attributes="member: 6688858">There's a spike in interest in 2006, and I've been trying to think of  what was going on then...and then I realized that's when Dungeons &  Dragons Online and Neverwinter Nights 2, the last major D&D  videogames, were released.Google won't let me look at any more graphs for a while but I'm pretty sure you're making the mistake of looking for a linear rather than relative drop. If the trend drops by the same fraction every year, the line will curve out rather than go straight to zero. If you rip a piece of paper in half again and again, you'll be tearing off smaller pieces each time.And then also obviously the trend will look flatter if you look at a smaller period of time.</blockquote>