In Cosmic Encounter, each player is the leader of an alien race. The object of the game is to establish colonies in other players' planetary systems. On a player's turn, he or she becomes the offense. The offense encounters another player on a planet by moving a group of his or her ships through the hyperspace gate to that planet. The offense draws from the destiny deck which contains colors, wilds and specials. He or she then takes the hyperspace gate and points at one planet in the system indicated by the drawn destiny card. The offense vs. the defenses ships are in the encounter and both sides are able to invite allies, play an encounter card as well as special cards to try and tip the encounter in their favor.