The Set Game Company - Developers of the SET card deck, based on visual perception.

AGM Agmüller - Swiss manufacturer and publisher of tarot cards, playing cards, and card games. Site includes cataloges, project information with photos, and online ordering. [English and German]

Looney Laboratories - Creators of "Fluxx" and "Aquarius". Site includes news, an e-zine, and an online store.

US Games Systems - Online catalog of playing cards, tarot cards, and card games. Also contains a museum of rare and unusual cards and games.

Precedence Entertainment - Designers of collectable card games including: Babylon 5, Tomb Raider, The Wheel of Time, and Fortune Teller.

Ultisoft - Developer and publisher of casino, arcade and card games.

Third World Games, Inc. - Publisher of trading card games, including "Firestorm".