Tafl

Hnefatafl
History and rules of the game and variants, like Tawlbyund and Alea Evangelii. Also the history and rules of related games like Ludus Latrunculorum and Seega.
http://www.gamecabinet.com/history/Hnef.html

Hnefatafl - An Experimental Reconstruction
Includes rules and figures depicting several variants. Written as a paper for an archaeology course.
http://www.treheima.ca/viking/tafl.htm

Hnefatafl - the Strategic Board Game of the Vikings
An overview of rules and variations of the game by Sten Helmfrid.
http://hem.bredband.net/b512479/

Nefatavl
Contains rules and game information.
http://www.nefatavl.dk/english.html

The Online Guide to Traditional Games
Contains history and information on the game family.
http://www.tradgames.org.uk/games/Tafl.htm

Taefl: The Saxons & Vikings
Offers rules and history with free downloadable computer version.
http://www.heorot.dk/tafl/

Tafl: An Obsession
Contains a brief history of the game, an outline of the rules, tips on strategy, and a Java applet to play the game.
http://tafl.snigfarp.karoo.net/tafl/