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Is it possible to use "at" instead of "in" relating to a phrase "cruel world".

Is "here, at the cruel world of violence, everything seems..." possible or it should be only "here, in the cruel world of violence, everything seems..." ?
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Sure.
Imagine a couple of cosmic commentators doing a live cosmocast;

"There's nothing unusual to report here at the cruel world of violence. What's the situation over there at Bill's world of maple magma, Jimbo?"
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Without the contrast between two or more different worlds, illustrated by Mike's reply, it would have to be in (this, actual, real) cruel world.
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Comments  
Indeed. Imagine the world (office, suburb, etc.) as a container. Use 'in' if something is within the container, and 'at' if something is just outside it or in its proximity.
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Thanks for your replies, and what if a phrase "at the cruel world of violence" relates to a website devoted to or depicting this "cruel world of violence"? Does this leave me with using "at" if I call a website devoted to violence "a cruel world of violence"(a world on the pages of this website)? So in this case do I still view it as a container, or as a point on a line (a site in world-wide web)?
I think you could safely use either, but there may be other opinions.