In a game of Cosmogenesis, each player creates their own planet system, starting from a star and an asteroid belt. To do this, they use the elements available on the different sections of the central board. In each round, players obtain one element from each of the four sections over four turns and with these elements players form planets and moons. These then collide with each other, causing them to increase in size, develop rings, form atmospheres, and of course create life. Players do all of this in order to fulfill their own objectives, which like the rest of the elements of the game, are obtained from the central board; at the end of the game, these provide the victory points that determine the overall winner.