You will have to guide the Doctor through four sectors of the TARDIS' neutral network - gathering artron energy crystals along the way to reach the data/matter converter and escape.
But beware, the data core carries information about the Doctor's deadliest enemies - and in his computerised form these "avatars" are as deadly as the real thing. Jump on them to delete them from memory.
Collect ten artron energy crystals before proceeding. Judoon troopers will try to stop you by cataloguing you as non-human.
How to play?
Use the left arrow to move left and the right arrow to move right. Press up or the spacebar to jump. The down arrow controls the sonic screwdriver, which will open logic gates that may block your way.
Because of the ubiquity of this race, no attempt will be made here to list every appearance in every medium. Instead, we focus on game appearances here, and invite you to explore a complete list of appearances elsewhere.