I know there are a couple of threads about this, but I thought I'd make a new one since there's been official news here.
Broken Sword creator Charles Cecil and Sheffield-based studio Sumo Digital have been signed up to make Doctor Who: The Adventure Games.
The episodic, PC/Mac games are billed as an extra four episodes for the new 13-show series five run which began in the UK during the Easter weekend.
But most importantly: the games are made in very close collaboration with the show's new production team - and they are completely free.
The Adventure Games consist of four downloads of around 250MB featuring the eponymous Doctor and his companion Amy in encounters with iconic enemies - actors Matt Smith and Karen Gillan have supplied their likeness and voices to the game.
You might know Sumo Digital from games such as Virtua Tennis and New International Track & Field, and of course Charles Cecil as the creator of the Broken Sword series. The games will be released for free (the BBC can't charge for its content) through the official Doctor Who website.
So there we go! Apparently it was commissioned in early 2009, so this has been planned for a long time. Here's an indepth interview with Stefan Moffat and Piers Wenger for more details about 'The Adventure Games'.