If there’s one thing that Valve is absolutely crazy at, it’s concept art. And Portal 2 had a lot of it. If you’re a Potato Fools’ Day veteran, you probably still have the hidden DLC archives tied to your account, which in total contain nearly a hundred Portal 2 concept art images. Maybe you even have the Portal 2 Collector’s Edition Guide by Future Press. But we haven’t seen all the delicious imagery Valve conjured into existence throughout Portal 2′s nearly 4-year development cycle. And it seems like they’re well aware of that - which might be why they’re going to make sure we do see it!