The Infocom Gallery: Planetfall
- High-quality scans of gray box packaging, manual, letters, ID card, and postcards.
- http://infocom.elsewhere.org/gallery/planetfall/planetfall.html

Infocom Documentation Project
- PDF file of scanned original game manual.
- http://infodoc.plover.net/manuals/planetfa.pdf

Infocom Games: Planetfall
- Box art and description, specifications, and sample transcript.
- http://www.infocom-if.org/games/planetfall/planetfall.html

Matthew Murray's Capsule Review
- "Though certain no heavy-duty mental challenge, if you are looking for a somewhat interesting science-fiction game, and have a fair amount of patience, Planetfall might just be worth your time."
- http://www.matthewmurray.net/Reviews/ComputerGames/Planetfall.html

MobyGames: Planetfall
- User reviews, credits, box image, trivia, and other information.
- http://www.mobygames.com/game/sheet/gameId,51/

Adventure Collective Review
- Reviewed by John Alston Campbell. "Planetfall is a good playground for beginners to learn some of the basics of adventure gaming."
- http://www.adventurecollective.com/reviews/planetfall.htm

Infocom Homepage: Planetfall
- Description, box art, release information, game statistics, and packaging details.
- http://www.csd.uwo.ca/Infocom/planetfall.html