article_snippet.sent: Twitter users reacted furiously to the game, which appeared on the BBC site last Wednesday.
article_snippet.sent: James Burke wrote: 'Unsure if decision based "game" is April Fool or not.'
article_snippet.sent: The game could have cost as much as £20,000, but the BBC insist it was made in-house.
article_snippet.sent: The project has achieved over a million online hits a week.'