Speaking at PAX, Valve’s Chet Faliszek has admitted that the developer has tossed aside and “thrown out entire games”.
No really, we’ll let Chet take it from here:
“We’ve thrown out entire games. You think something’s gonna work and… [developers] talk about this giant design document and it’s just like we’re so much more iterative.
We have these ideas we want to express [and] the easiest way to test those is get them in the game as soon as you can and then have someone not on the team play it.
All through the Left 4 Dead process, all through the Left 4 Dead 2 process we’ve had outside players come in and play the game and give us feedback.”
More at TVGB.