If we have to choose a game of the show for E3 2014 then there is no doubt that it would be PS4 timed exclusive, No Man's Sky.
Below is a new video in which IGN interview Sean Murray of Hello Games. As explained, No Man's Sky is a Sci-Fi game which is inspired by sci-fi books from the sixties. It's a large sandbox style game which is based in an open universe. You can basically explore, upgrade your ship and decide how you'll have fun.
There are combat situations, but you can also choose to explore or even look more into the lore of the universe.
Check out the interview below as it's very interesting.
No Man's Sky has not yet been dated, but will be coming first to PlayStation 4.