Doctor Who Time Travellers Companion Roleplaying GameTime flies when you're having fun, but flying through time can present a whole host of problems. Whether accidentally creating paradoxes, upsetting the course of history or trying to Put Things Right, you're going to need to know your way around the Vortex. You need a guide and a companion. This 240 page hard cover supplement for Doctor Who: Adventures in Time and Space gives more information on Time Lords, temporal mechanics and time machines,