3 years ago when I was 12, I liked to play with my friends very much co-op games, my and my friends favourite Co-Op game were Call Of Duty: Black Ops 2.
Every day basically we went to my friend house with my 3 friends and we played BO 2 Zombie Mode and TDM for hours, I think, we played 3-4 hours straight in a day. My most favourite map in this game was Nuketown.
I still miss these times.