Some people have taken in The Code passively, by simply watching the broadcast episodes; some have played the Flash games as casual gamers; some have turned their hand to real-world exploration or artistic photography for the Prime Number Challenge; some have used pen and paper to individually work out the classic puzzles; some have turned their talents to creating spaces for group problem-solving, and others have collaborated in those spaces. And many people did all of these things. It is impressive to see the range of game types and media types and the levels of interaction that were incorporated into this one transmedia treasure hunt. —Cracking the BBC’s Code at Bletchley Park | Magazine | Wired.com.