I mean, Activision always sais that the new cod is the most sold one, but I don't trust them, you can see in psnprofiles that the most played cods are BO1 and BO3 what makes me think that Kino or SoE must be the most played maps. I know that people used Liberty Falls to grind camos but I still think that people spent hours and hours playing on Kino for example. In my case I bought BO1 on PS3 and then on PC, I really think I spent more hours on Kino than on BO6.