Playing Killzone: Shadow Fall on PS4. Pretty good for what it is. The SP is your typical single player FPS, very pretty graphics but really it's your run of the mill "walk forward shoot enemey, walking forward shoot enemy", with the occasional wave after wave of enemies. Nothing special.
The MP is fun, though, and that's where I'm spending most of my game time at the moment.
I'm also playing Resogun on PS4 as well since it's free with PS+, a pretty fun space shooter.