The 27 new age cards are new structures, having various effects.
There are also 3 new Guilds, 6 new Leaders and 2 new Wonders. This expansion allows to play with 8 players and offers a team game mode.
Cities cards have a black background, and during an age, there are as many Cities cards than the number of players.
These cards are randomly taken from the nine Cities cards per age. The Cities cards in play are unknown. These cards have various effets but there are three major effects : diplomacy which allows to avoid the military conflict at the end of an age, the loss of money for the other players and the copy of scientific symbols from the neighbouring cities during the final scoring.