[3][2] The first edition boxed set contains: In the 2014 book Designers & Dragons, game historian Shannon Appelcline discussed early 1990s publications for Call of Cthulhu, and noted that "Horror on the Orient Express (1991), another classic mega-adventure, also appeared during these years.

Artwork was by Gustaf Björksten, Patricio Contreras-Toro, Laurie Deitrick, Dean Engelhardt, Earl Geier, Lee Gibbons, Stephanie McAlea, Marco Primo, Roger Raupp, and Carol Triplett.

[5] In the Fall 1991 edition of The Unspeakable Oath (Issue #4), John Tynes called the 1991 product "one of the most intriguing releases Chaosium has ever put out."

[2] Wayne Ligon reviewed Horror on the Orient Express in White Wolf #30 (Feb., 1992), rating it a 5 out of 5 and stated that "What can one say about 200 pages of top-quality adventure?

Thanks to the strong narrative and skillful pacing, the suspense never lags and the surprises never stop coming, a remarkable achievement for an adventure spanning more than 200 pages."

The only negative note Swan made was about the game box, which he called "a flimsy single-piece affair virtually guaranteed to disintegrate," but he gave everything else the thumbs-up.

"The components themselves are superb [...] The books are well-organized and loaded with troubleshooting tips, making the complex adventure relatively easy to run [...] The story carries the players along on a series of cascading shocks, each more jaw-dropping than the one before."

"[3] In a review of Horror on the Orient Express in Black Gate, John ONeill said "It was a huge undertaking — a complete campaign that spanned the European continent, crammed into a box containing four lengthy books, numerous player handouts, a European route map; cardstock plans of the train that could be laid end-to-end; scrolls, and even luggage stickers.

"[7] In the November–December 2014 issue of Casus Belli, Marc Sautriot reviewed the 2014 edition, and noted that the 704 pages of material covering 19 separate scenarios would likely result in over 120 hours of playing time.