"Allons-y!"

Equestria's resident Time Lord has snatched (you) up to be his latest companion! Watch out for Cybermares...

The Doc and (you) find yourselves in Parallel Equestria and uncover a dark conspiracy to upgrade the ponies into emotionless Cybermares. I'm sure the Doctor will keep you safe, nothing ever bad happens to his companions.

Very loosely by the Rise of the Cybermen / Age of Steel two-parter, and the Dr Whooves here is sort of inspired by the 10th Doctor. (You) don't have to be Rose, though.

Art creds:

gaelledragons

raichi