Doctor Who: Adventures in Time and Space: The Time Traveller's Companion

Time 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…a companion.

This supplement for Doctor Who: Adventures in Time and Space gives more information on Time Lords, temporal mechanics and time machines, including:

Gallifreyan culture, history and law
New options for creating and playing Time Lord characters
More on the physics of Time, temporal phenomena and Time Travel
Detailed information on the TARDIS, and rules for creating your own
Secrets of the Time Lords...