Unknown Worlds of Science Fiction

A six-issue anthology series from 1975, Unknown Worlds of Science Fiction was Marvel's attempt to capture the moody, speculative spirit of the 1970s sci-fi boom. Featuring a rotating roster of European and American artists—including the lush, detailed work of Alex Niño, Bob Kline, and Esteban Maroto—the series offered standalone tales of alien encounters, future tech, and cosmic dread. Though short-lived, it stands as a distinctive, visually ambitious showcase for Marvel's more experimental, non-superhero storytelling of the era.