In recent years the cover of the original AD&D Player's Handbook has inspired several homages.
I seem to recall some internet drama when the Hackmaster PHB premiered. Apparently John Kovalic got mad because he thought Kenzer & Co. was ripping off his idea, which was to rip off someone else's idea. Weird.
As I write this blog entry the PHBII has not been released. I found this image on Amazon, so the final cover may differ from this version.
5E Gets Elemental and Evil
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