First, let us acknowledge other such guides that have come before us. THHW2HHGG is intended to supplement these other guides…

• The fandom wiki:
  • https://hitchhikers.fandom.com/wiki/Main_Page
• The AFDA FAQ:
  • https://www.zootle.net/afda/faq/a.shtml
  • https://sub-ethr.net/afda/FAQ/
• The AFDA mFAQ:
  • https://www.zootle.net/afda/mfaq.shtml
    • as blessed by https://douglasadams.com/dna/mfaq.html
• Wikipedia:
  • https://en.wikipedia.org/wiki/The_Hitchhiker%27s_Guide_to_the_Galaxy
  • https://en.wikipedia.org/wiki/Timeline_of_The_Hitchhiker%27s_Guide_to_the_Galaxy_versions

• Radio
  • Phases: Primary, Secondary, Tertiary, Quandary, Quintessential, Hexagonal
  • Translations: Dutch, German, Finnish, Swedish, French
• Stage
• Novels
  • The Hitchhiker's Guide to the Galaxy
  • The Restaurant at the End of the Universe
  • Life, The Universe, and Everything
  • So Long, And Thanks for all the Fish
  • Mostly Harmless
  • And Another Thing… (by Eoin Colfer)
• Games
  • The Hitchhiker's Guide to the Galaxy - Infocom text adventure game
  • Milliways - the unfinished Infocom sequel
  • Starship Titanic
• TV
  • BBC
  • ABC (not made)
  • Hulu (currently in production hell)
• Towels
• Movie
  • 1987 script
  • 2005 Disney
• …add to this list!

• Arthur
• Ford
• Zaphod
• Trillian
• Marvin
• Slartibartfast
• Fenchurch
• Wowbagger
• Agrajag
• Vogon Prostetnic Jeltz
• …add to this list!

And some minor characters too: Hotblack Desiato, Max Quordlepleen, Zarniwoop

• Dirk Gently's Holistic Detective Agency
  • Two novels
    • And hints of a third
  • A stage play
  • A radio series
  • BBC4 TV series
  • Comic book adaptation
  • BBCA/Netflix TV series
  • Upcoming animated series?
• Last Chance to See
  • Book
  • Radio series
  • CD rom
  • Another Chance to See
    • Book
    • TV series
• The Meaning of Liff
• The Digital Village
  • H2G2.com

HHW2HHGG is a creation of the Heart of Gold discord community.