Google have made a lovely playable Doctor Who game as their doodle...
You can choose which Doctor to play as.
Then you can get chased around by Daleks.
Of course, if you die, you regenerate into the next Doctor.
Get the letter, and get back to your TARDIS to complete each level.
Spoiler: in later levels, there are also Cybermen and Weeping Angels.
It's not live in every country yet, but it is live on Google UK.
