In just 12 days, 524,299 Doctor Who: The Adventure Games download requests were made on the official Doctor Who site.
The site also reports a week-on-week increase of 67 per cent traffic. Steven Moffat, head writer and executive producer, commented: "Half a million download requests in 12 days - amazing."
Moffat belevies the chemistry between Matt Smith's and Karen Gillen's characters is the hit concept. "The way the games capture the look and feel of the TV series is amazing, he said. "Matt Smith walks like a drunken giraffe on-screen and also in-game - it's a virtuoso virtual performance.
"Karen is a staggering companion - literally, have you seen her when the TARDIS shakes? - and her personality is perfectly captured in these episodes. There are some genuinely funny lines between the two, so we've really brought the TV series into the control of families up and down the country."
Moffat had only one worry, that he "won't get any writing done, what with playing the game all the time."
Episode two of the Doctor Who: The Adventure Games will be unveiled at a special BBC Learning event in Scotland next week, showing it off to 150 kids on Tuesday 22 June. A second event in the afternoon will be streamed live to the BBC's Doctor Who site to anyone in the UK with a web connection will be able to view it live at www.bbc.co.uk/doctorwho from 2:00pm.