The Infocom Gallery: The Hitchhiker's Guide to the Galaxy
- High-quality scans of packaging, manual, "Don't Panic!" button, pocket fluff, demolition orders, and microscopic space fleet.
- http://infocom.elsewhere.org/gallery/hhgttg/hhgttg.html

BBC Interview with Steve Meretzky
- Steve Meretzky talks about Douglas Adams, game difficulty, non-linearity, and deadlines. [Contains puzzle spoilers.]
- http://www.bbc.co.uk/radio4/hitchhikers/stevem.shtml

Radio 4 Revives Hitchhiker's Game
- A Douglas Adams game is revived to mark a new Hitchhiker's Guide To The Galaxy radio series. [BBC News]
- http://news.bbc.co.uk/1/hi/entertainment/tv_and_radio/3615046.stm

Infocom Games: Hitchhiker's Guide
- Box scans, introduction, specifications and sample transcript.
- http://www.infocom-if.org/games/hhgttg/hhgttg.html

New Zork Times: Don't Panic
- Text of game announcement from Infocom's newsletter.
- http://www.csd.uwo.ca/Infocom/Articles/NZT/Nztfal84.html#hitch

The Restaurant at the End of the Universe
- Stu Galley's explanation of why the sequel was never released.
- http://www.csd.uwo.ca/Infocom/restaurant.html

Adventure Collective review
- [4/5] by Joshua Mintzer
- http://www.adventurecollective.com/reviews/hitchhikersguidetothegalaxy.htm

DouglasAdams.com: The Hitch Hiker's Guide to the Galaxy - The Adventure Game
- Play the text adventure on-line using Java on Douglas Adams' website.
- http://www.douglasadams.com/creations/infocom.html

Infocom Homepage: HGttG
- Description, release information, statistics, and packaging details.
- http://www.csd.uwo.ca/~pete/Infocom/hitchhikers.html