Complex sentence: Upon reaching the Great Divide, the player selects a symbol and the Master gives the Graak a riddle; and, during the loading time, a map of the area of the TARDIS the player will explore is shown.
Split into simpler sentences: Upon reaching the Great Divide, the player selects a symbol and the Master gives the Graak a riddle. During the loading time, a map of the area of the TARDIS the player will explore is shown.