London: Earthlight hardcover and simultaneous trade-sized paperback, 2000 (November 20th);
by Michael Moorcock & Storm Constantine;
sub-titled “A Novel Of The Multiverse” on front cover only;
original prices: £16·99 (h/c), £10·00 (p/b);
vi + 408 pages;
I.S.B.N.s: 0-684-86670-6 (h/c) & 0-7432-0943-5 (p/b);
cover artist: Jim Burns.

Silverheart was a collaborative novel based on Michael Moorcock’s original scenario for an electronic rôle-playing game which was due to have been (but never was) released by Digital Anvil.

First edition hardcover, reprinted 2000 (before publication date)
(+ book-club ed.[?])

Earthlight mass-sized paperback, 2001 (November 19th);
original price:  £6·99
vi + 408 pages;
I.S.B.N.:  0-7434-0867-5.

Trade paperback (simultaneous 1st ed., not to scale), published for export (beyond the U.K.) only.

First American edition:  Amherst, N.Y.: Pyr hardcover, 2005 (September);
sub-titled “A Novel Of The Multiverse”;
original price:  $25·00;
484 pages;
I.S.B.N.:  1-59102-336-X;
cover artist:  John Picacio;

 (pp. 5/6) by Moorcock.

(Click here for Foreign Editions)