"I wish we had a button that was like ‘Turn On PS4 Mode’, but no," Druckmann said. "We expected it to be hell, and it was hell. Just getting an image onscreen, even an inferior one with the shadows broken, lighting broken and with it crashing every 30 seconds … that took a long time. These engineers are some of the best in the industry and they optimized the game so much for the PS3’s SPUs specifically. It was optimized on a binary level, but after shifting those things over, you have to go back to the high level, make sure the systems are intact, and optimize it again.