What Might Have Been

Alternate Empires by Robert Silverberg, Gregory Benford, Larry Niven, George Alec Effinger, James Morrow, Frederik Pohl, James P. Hogan, Kim Stanley Robinson, Martin H. Greenberg, Karen Joy Fowler, Barry N. Malzberg, Harry Turtledove, Poul Anderson

Alternate Empires

What Might Have Been #1

Robert Silverberg, Gregory Benford, Larry Niven, George Alec Effinger, James Morrow, Frederik Pohl, James P. Hogan, Kim Stanley Robinson, Martin H. Greenberg, Karen Joy Fowler, Barry N. Malzberg, Harry Turtledove, Poul Anderson

292 pages • paperback • 1989

fiction science fiction adventurous challenging medium-paced
Alternate Heroes by Gregory Benford, Martin H. Greenberg

Alternate Heroes

What Might Have Been #2

Gregory Benford, Martin H. Greenberg

354 pages • 1989

fiction science fiction adventurous challenging fast-paced
Alternate Wars by Gregory Benford

Alternate Wars

What Might Have Been #3

Gregory Benford

304 pages • 1991

fiction science fiction informative reflective medium-paced
Alternate Americas by Gregory Benford, Martin H. Greenberg

Alternate Americas

What Might Have Been #4

Gregory Benford, Martin H. Greenberg

320 pages • 1992

fiction science fiction short stories adventurous slow-paced