To celebrate the 50th anniversary of Doctor Who on Saturday, Google turned their homepage into a game worthy of a time lord.
The game allowsusers to pick their favorite of the 11 doctors and walk through a board rife with Daleks, Cybermen, and Weeping Angels in order to rescue the letters in the word Google. Die on the board, and the doctor will regenerate into his next incarnation.
The surprisingly challenging game ends with a timed score that you can share with your friends (and try to beat). Play it here.