Porting a game from PS3 to PS4 is no simple task. Sure, one might imagine that you just bump up the resolution and put it on a new disc, but bringing a game like The Last of Us to a new console is actually a huge headache. As TLOU creative director Neil Druckmann puts it in this new EDGE feature, "We expected it to be Hell, and it was Hell."
via Kotaku http://ift.tt/1gPrDSI