Most of the advice about Worldbuilding out there seems to come down to geophysical and climatological advice about making you fantasy world physically plausible.
This is all very well until you want to do something non-standard. The world I'm working on at the moment is very non-standard, and the lack of suggestions and advice is making me feel like I'm flying blind.
Now some people would say that to be plausible a world has to follow mundane physical laws. But what if the world isn't a mundane physical world? Leaving aside completely implausible physical setups like Terry Pratchett's Discworld or the roleplaying game Exalted's Creation what about world's that are not physical in the mundane sense? The Matrix and similar fictional virtual worlds only obey's mundane laws (if the do) because they are programmed that way.
Well I would say that a non-standard world still needs consistent rules to underpin it even if they differ radically from the laws of physics. It's consistency not mundanity which makes even the implausible plausible in my opinion. So I'm currently coming up with the laws that rule this particular world I'm developing - which is great fun.