I own them all except Unity and have played bits and pieces, but as a kid I had a bad habit of never finishing games.Wow, that's not good!
When I was a kid my parents didn't have enough money to buy me many games, so I played the heck out of the only ones I had and as I've grown up I've kept that philosophy. I've completed every game I've bought except LBP3 which bored me out of my mind.