Imangi’s Temple Run (Free) is the legendary behind the back runner that kicked off the whole genre. I doubt anyone reading TouchArcade hasn’t played either Temple Run or one of the related behind the back runner spinoffs made by every other developer under the sun.

We met up with developer Keith Shepherd at GDC, and at a dinner the night before he was talking about how when they hire people now they go through the various stages of Temple Run’s development to give an idea of what’s possible in the mobile space after a day of work, a week of work, and a month of work. Ending with the prototype that Imangi showed off at GDC before the launch of Temple Run, this video provides a never before seen look at the iterations of Temple Run through its development:

It’s crazy how you can see Temple Run slowly emerging from Max Adventure (Free), especially with how after a week of work it was clear they had something really fun on their hands.