These are the British covers for Wild Cards volumes 1 through 6, from Titan Books.
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These are the covers for the two original Wild Cards volumes that iBooks (Byron Preiss) published in hardcover—
DEUCES DOWN (volume 16 in the overall series) and DEATH DRAWS FIVES (a solo novel by John Jos. Miller, volume 17 in the overall series).

The cover design and art for DEUCES DOWN is by Steranko.

The cover art for DEATH DRAWS FIVE is by Mike S. Miller, and depicts the Midnight Angel.
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These are the covers for the trade paperback reissues of the first five volumes of Wild Cards,
published by iBooks (Byron Preiss).
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These are the covers for the mass market reissues from iBooks (Byron Preiss).

iBooks issued volumes 1 through 3 in trade paperback, then reissued them in mass market.
Later they dropped the trade editions, so volume 6 came out only in mass market.
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These are the covers for some of the German issues of the Wild Cards series; published by Heyne.
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Here are the covers for the Japanese editions of the first three Wild Cards books.
Each book was divided into two volumes.
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