Aliens are planning to secretly take control of the earth. Humans who get to know about this can try to stop them. The players bet which side is stronger in the end to score points. In Galaktisch Taktisch Gut, each player holds two cards. One player draws two cards and passes two cards to any other player, who then discards one of these, revealing it only to the player who gave it to them. In addition, the active player can play an action card and execute its special effect. When the draw pile is used up, each player makes a bet on whether the players hold more alien or more human cards in their hands. All players who guessed correctly, win — unless everyone bets on the aliens, then the player who holds the alien leader wins.