Sumo Digital and Revolution Software's Charles Cecil, creator of Broken Sword are working in close collaboration with the show's production team to create games that are dubbed 'the extra four episodes' for the new 13 show run which started last week.

The BBC cannot charge for its content as part of its public service remit - instead The Adventure Games will be digitally distributed every few months via the official Doctor Who website. The Adventure Games will be released partly in tandem with the show and are billed as being an 'extra four episodes' for the 13 show run which started last week.

The BBC and Sumo hope to redfine what massmarket consumers and Doctor Who viewers think of video games as part of the release.

"This really redefines the perception of what a freebie is," said Sean Millard, creative evangelist at Sumo. "No longer will a freebie mean just some cheapy web game."

Cecil told MCV that he thinks the episodic delivery of the game can help build 'a new form of drama' by mixing the worlds of TV and games, and help encourage the show's mass audience to try new gaming experiences.