The galaxy in Cosmic Encounter is, like most galaxies, in constant change. Just when you think you have explored every corner of it and met all its alien species, you discover that a new star system has appeared, with new species and unique customs.
You have learned that when you interact with a strange alien for the first time, it is best not to reveal your entire hand at once. If you want to establish colonies in these new parts of the galaxy, you will need to hide your true intentions, negotiate with cunning, and be careful not to step into a cross-cultural quicksand.
Cosmic Eons is an expansion for Cosmic Encounter that introduces new aliens with new abilities that are completely different from those you have encountered before. The expansion also includes a "Hidden Alliances" variant that allows you and your opponents to simultaneously reveal which side you are on. This twist opens up a whole new part of the galaxy and changes the way you play the game.
Base game:
Expansions:
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