This set introduced two new keywords: flanking and phasing.

This set introduces the Cyberdark monsters, as well as various dueling strategies.

A set of wings was also introduced, said to have been designed by Jock Lewes.

This set introduced a new type of Power for a piece, called "Effect".

An unpopular set of labor market reforms introduced under Chancellor Schroeder from 2003].

Chinese sets also introduce duplicates of some throws and divide the dominoes into two classes: military and civil.

This boxed set introduced the campaign setting and explained how to use it.

This set introduced the factions of Saturn, Io, and Ganymede.

The sets (along with the official website), introduce two groups of good and evil characters.

The 140-card set introduced no new mechanics or keywords; however, it did use some of the mechanics previously unique to Ice Age.