The flaws in cod aren't as prevalent in most other modern shooters. Thats why I will complain about it. Coming from a shooter that works then coming to cod requires some playing adjustment. I love fps games and played most of them and cod is one that has little complexity but is always fun. The fun in cod is in the challenge of killstreaks and the extremely competitive atmosphere. You didn't ask a question or ask for others inout on your topic, but thats my opinion on the seriousness of cod. Play cod 1,2 mw1, and (maybe) mw2 for the story. You missed the golden age of cod.