They are connected by the Metazoan Bridge. The object of the game is to evolve from the primordial ooze, progressing through increasingly complex forms of life until you reach the level of either birds or mammals. Play The game begins with all tokens located in the primordial ooze. Each player takes turns rolling the pair of dice. The player must roll a seven before he or she can advance out of the ooze and reach the level of the Prokaryotes.
Evolution is, after all, mainly a crap shoot.
Once out of the ooze the player advances to the start square for the Prokaryotes. The player rolls the dice and moves in a clockwise direction around the track. The card contains a question about the organisms represented on that track. The player must answer the question. When a player has answered five questions on the track he moves to the start square on the next track.