yaya wrote:Magira was the setting for a series of fantasy novels by Hugh Walker aka Hubert Strassl.  They were based on a long running war game played at conventions.

Ah, thank you. An Amazon search turned up the DAW paperbacks.

I'm don't see the analogy between Magira and Nehwon at all.

Oh, sorry, thought I mentioned it. It was drawn by Jim Cawthorn, a British comic and fantasy artist and historian who did some early Michael Moorcock book covers (I think he did the cover for the first edition of Stormbringer) and suchlike. He also wrote a book with Michael Moorcock, Fantasy: The 100 Best Books, for which as I understand it he did most of the actual writing. He passed away in 2008. I haven't really looked any deeper into his background than that, but a little googling turned up that much. I don't think there was a wikipedia page.