Call of Duty actually feels different this year. Yes, it's called Modern Warfare once again. But this is no reboot, when it comes to game play, even if the characters carry some of the same names. It's a change of pace - even from this game's own beta. Fights feel less like people running around at 50 mph with hand cannons. The player who perches by a window while a claymore mine defends their six is king. Sure enough, multiplayer matches feel slower than even the original Modern Warfare, and it even feels noticeably slower than this game's multiplayer beta, which was already dialed back from the warp speeds of previous releases. We haven't had much time to play with the single-player campaign, since The Washington Post did not receive review copies until this morning. So, we will be updating this post as impressions come to us. Here's what we think so far: - The beginning of the campaign underscores the smaller-scale urban fights that typified the "Warfare" series. We only went through two missions this morning, but other early reviews today also note that there are scenes with violence that might make viewers uncomfortable. Indeed, the introductory cinematic ends with a suicide bomber appearing to detonate a vest of explosives next to a woman who pulls her child close to her. Shades of the London bombing scene from Modern Warfare 3. - The "leaning" mechanic makes a welcome appearance in the series. Players can now mount their weapons on an object like a desk or door frame and aim without exposing their bodies to incoming fire. Call of Duty has been the source of many memes, including an 2009 comment from Infinity Ward that Modern Warfare 2 was "not balanced for lean." - For some, like myself, all this attention to slower, more tactical ground warfare is a welcome......