Castles & Crusades is a role-playing game published by Troll Lord Games in 2004. It was conceived as a reimagining of classic Dungeons & Dragons using streamlined mechanics from third edition Dungeons & Dragons. The game uses many of the d20 System mechanics, but eliminates skills and feats and expands the number of character classes to 13. Another feature is the reversion of some rules to the original versions seen in original Dungeons & Dragons (often referred to as "OD&D") or first edition Advanced Dungeons and Dragons (AD&D).
The system that Castles & Crusades uses is called the SIEGE Engine. A significant new mechanic is the notion of "Primes," often referred to by gamers as the 12/18 system. Through selection of character class and race, players designate some of their character's attributes as "Prime." These Prime attributes use a challenge base of 12, while non-Prime attributes use a challenge base of 18. Tasks based on the Prime attribute are therefore much easier to accomplish than those based on non-Primes. Primes allow a wider variety of characters to be created because characters of same class may excel at different types of tasks.
The first three products produced for Castles & Crusades were an introductory boxed set, the Players Handbook, and Monsters & Treasure, a list of creatures and magic items for the game.
In 2005, a full 128-page hard cover version of the C&C Players Handbook and Monsters & Treasures book were released. A 4th print of the PH as well as a 3rd print of the M&T are in production and will see release in 2009.
A collection of alternate rules and guidelines for modifying the system, the Castle Keepers Guide, is expected in late 2009. Troll Lord Games has published more than a dozen adventures for the system, and small-press publisher Goodman Games has produced three adventures for Castles & Crusades under license.
The name of the game derives from the Castle & Crusade Society, founded in the pre-Dungeons & Dragons era, by Gary Gygax. The title is in homage to the roleplaying industry's birth.
The shared lineage and resulting similarity in rules between Dungeons & Dragons, Advanced Dungeons & Dragons, Hackmaster, and Castles & Crusades simplifies conversion of rules and statistics between the games.
- Troll Lord Games is the publisher of Castles & Crusades. The site includes a list of products in the line.
- Goodman Games publishes several adventure modules under the Castles & Crusades license.
- Castles & Crusades Society Currently active C&C Society, publishes the quarterly "Domesday Book"
- Adventure Games Publishing Licensed publisher of Castles & Crsuades supplements and the Wilderlands of High Adventure Campaign Setting. The site includes links to products for C&C.