Simon noticed that in Anno 1800 there is a fixed sun position enabled by default, making the sun always light up the scene from right to left, leaving fairly long shadows and making buildings more distinguishable.

On the right you can see what happens with more realistic stable sun positioning. It is harder to look and track each separate part of the city.

Which means: don't be afraid to break rules, don't rely on realism fully. Sometimes it may sound odd, it may be unreal, but still does the job better.

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