In this game, the players build up a map of the stars. Each player has a board on which seven stars can be placed. Each turn, a player chooses an action card and performs the corresponding action. Each action card has a rank and an action. The rank of a card determines the order of play for the next turn. There are several different actions: draw a Star Card, put a Star Card on your board, prohibit another action from being played, discard a Star Card from another players board, produce resources, collect victory points, etc. Star Cards may show resources, victory points and a special ability. The special ability is triggered when the card is played. Resources and victory points are collected when the player plays the corresponding action card. When a player reaches 150 victory points, the game ends, and that player wins.