Popular rule variations compiled by Mark Wiening.

Contains official rules, house rules, and some historical anecdotes. Also features an online catalog.

A multiplayer version of the game for your PalmOS handheld. Released under the GPL license.

Official rules and statistical probabilities for certain rolls.

Reviewed by Kristin Looney. "It's a REALLY cool game. A social game... A timeless classic."

Reviewed by Doug Smith. Rating: 4/5. "It's cheap and fun. It is also one of those games that non gamers can enjoy."