Silicon Dreams is a trilogy of interactive fiction games developed by Level 9 Computing during the 1980s. The first game was Snowball, released in 1983, followed a year later by Return to Eden, and then by The Worm in Paradise in 1985. The following year they appeared together in a bundle as the first, second and last of the Silicon Dreams. Early advertisements gave it the title of Silicon Dream, but it was later pluralised.
The trilogy is set in a not too-distant future when humans have started colonising space.
Source: Wikipedia, Silicon Dreams trilogy , available under the CC-BY-SA License.