render engines,lights,shaders settings.
about all render engines ya half to fight with shadow settings.
some render engines are better at diffrent things.

balance topology helps.

Bumps help a lot with low polycount meshes "game meshes".
Game meshes are Tri'ed.

 

some older render engines don't care about back facing pologones
but most newer ones will.

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The Artist that will fight for decades to conquer their media.
Even if you never know their name ,your know their Art.
Dark Sphere Mage Vengeance