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Message: <blockquote data-quote="PowerWordDumb" data-source="post: 1034985" data-attributes="member: 8614">I don't know about the "brainiac" part - it is monday - but I'll give it a shot.Multiple moons:  Most of the time I believe you'd have highly-fluctuating tides of relatively low magnitude, due to destructive interference of the various gravitaitional attractions.  Rarely, you'd hit a period of constructive interference, and you'd have either super-massive high tides which could go hundreds of miles inland (think of the campaign possibilities!) or low tides that push the seafront out several miles, stranding entire fleets, wrecking fishing and shipping industries, and depriving entire areas of drinking water (assuming drainage to the sea of most rivers).Lots of good fodder there for historic accounts of devastation that you can have sprung upon your characters to profide campaign motivations.  What do people do for food & water after such a catastrophe?  What happens to power structures - who's been hiding in the woodwork looking for a chance to seize control?  What, if anything, can anyone do about it?  What if someone found a magical way to lock the moons in their position in order to continue a condition beneficial to them?Multiple suns:  Depending upon the binary system and orbital paths you decide upon, this can get complex.  It could range from a relatively earth-like daily rotation (both suns follow each other closely) to something bizarre, with wildly-varying day/night lengths, or no nighttime at all.  Seasonal changes could be either muted entirely, or extreme.Lots of good stuff there too to draw upon.I'm sure much smarter campaign-builders than I can give you much better help, but maybe this'll get you started.</blockquote>

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