The strategy guide was written by David Sears and published by Cyberdreams. (Sears had just ended his studies and worked at Compute!, where he wrote a review of the game.) The guide includes a scrapbook with photos of a visit of members of the crew to Giger's studio in Zürich. In the booklet two new games are announced, "Cyber Race," to be released in the Spring of 1993, and "No Mouth" for the fall of 1993. CyberRace would be published the next year, but it would take three years before No Mouth was published.
To promote the game, a public relations campaign had been set up by Cyberdreams's marketing manager Dave Gerding. Dark Seed won the Spa 1993 Codie Award for Best Fantasy Role Playing/Adventure Program in the midst of heavy competition (other nominees were Amazon: Guardians of Eden, Star Trek: 25th Anniversary, Indiana Jones: Fate of Atlantis, Rex Nebular and the Cosmic Gender Bender, Ultima VII: The Black Gate, and King's Quest VI: Heir today, Gone Tomorrow). A non-playable demo with some stills from the Normal and Dark World was also released.
At that time the company was still understaffed. Joby Otero recalls that even at the time the PC version of Dark Seed had been shipped, they actually answered customer support calls while making the Amiga port and working on the next game CyberRace. By then the company seemed to have moved, as an office address was printed on the Dark Seed game box: "23586 Calabasas Road, suite 102, Calabasas, California."
At first sight, there's something strange with the company's addresses. In the hint book (1992) and on the CyberRace game box (1993) a different address was printed: "21243 Ventura Boulevard, Suite 230, Woodland Hills." That address came pretty close to the non-existing address of the Victorian House in Dark Seed ("Venture Drive, Woodland Hills"). But on the box of the sequel of Dark Seed (1995), the address was changed back into the one at Calabasas Road. David Mullich, who joined the company in the summer of 1993, solved the riddle. At that time the company was indeed located at Ventura Boulevard, and later on it was relocated to the office at Calabasas Road. After the relocation, the new address was printed on the Dark Seed boxes, which were still being published.