Last Guardian e3 2015 from ps3 engine, PS4 engine to be used for final product

[Ruler]

Apparently the demo that was seen at E3 2015 was already completed on the PS3 by July 2010, but once they shifted their focus to PS4, they ported the demo to the new hardware and showed it at E3 2015. They also had to create a new engine for the game on the PS4.

had, not have

game will come out in 2016