The bulk of the game takes place in the Doctor's TARDIS. The game begins in the Console Room of the Fourth Doctor's TARDIS, and the player must then select one of the Doctor's seven incarnations and activate the TARDIS to go in search of them. Upon reaching the TARDIS of the selected Doctor, the player can use a "Time Winder" (a pyramid-like save point) and then set out into the TARDIS to find the Master. (wikipedia.org)