Doctor Who: Legacy is a free mobile RPG/Puzzle game app from BBC Worldwide and Tiny Rebel Games, yet another celebration of 50 years of the Tardis. It starts off with the most recent Doctor, Companions, and Villeins from the latest two seasons, but the plan is to expand it to cover everyone from the entire 50 year history of the series. They have versions for Apple and Android, and I should probably mention that the game supports micro-purchases, meaning you can acquire objects and characters by spending real money. Personally I went into settings and turned that function off, but every day in December they plan to have new stuff for free including K-9 and Sarah Jane Smith, and in early 2014 they will have everyone from Series 5 also available for free. The screen shot is the first point in the game where the Doctor speaks to you and invites you to become a companion; the music and artwork for this game are quite tasty.

Who Legacy screen capture
Who Legacy screen capture