Modern Warfare (2007): 94People are needing time to review the multiplayer. I wouldn't be surprised if it drops a lot.
Modern Warfare 2(2009): 94
Call of Duty(2003): 91
Call of Duty 2(2005): 89
Modern Warfare Remastered(2016):89
Black Ops(2010): 88
Modern Warfare 3(2011): 88
Basically the highest rated Call of Duty game in 7 years.
But I'm really surprised it only has 13 reviews.