Everyone knows the TARDIS is bigger on the inside than the outside; and the selection of aural locations from your Doctor’s moves will equally broaden your horizons. No less than seven alien worlds are frequented, as well as some extra-ordinary, extra-dimensional occurrences experienced on the planet (Sol 3 in the Mutters Spiral). Increase these an audiogram from the Doctor’s very own mind processes, TARDIS operations, some weaponry for self-defence and your galactic protection is ensured. Time Lord Note: a source of jelly babies is preferred to complete the illusion of your time travel.