The BBC has announced another set of episodes for 2011 after the success of the current series, which has so far achieved downloads of 1.6 million.
It will once again be developed by Sumo Digital and produced by Steven Moffatt, Piers Wenger, Beth Willis and Anwen Aspden.
The canonical episodes, which will be written by established Doctor Who writers, will also feature the likenesses and voices of Matt Smith and Karen Gillan.
"Given the success of the first series, we'd be daft not to recommission," said head of multiplatform Simon Nelson.
"But it's not just about the numbers; the feedback we've had has been overwhelmingly positive. Our audience has been introduced to a new form of drama - and, for many, these have been the first computer games they have downloaded.
"We've set new standards in audience participation - and we think we've really helped push the concept of families actively playing together. I can't wait to see what the team does next."
BBC Wales Interactive executive producer Anwen Aspen added: "The audience reaction to the first series has been incredible, but we want to outdo the first series in every way.
"We want to take players on journeys which will bring the show to life like never before, and once again offer outstanding interactive drama to fans of all ages."
The fourth and final episode in the current series, which will be released later this year, will feature an original new world from showrunner Stephen Moffat.
The episodes will continue to be free downloads for UK licence fee payers.