With all the trailers and press releases for MWII going on right now, we’re getting more and more details about the gameplay every day. It looks like the new engine for Modern Warfare 2 and Warzone 2 will bring huge upgrades to the movement, weapons, vehicles and gadgets. Truly, this could represent a new era in Call of Duty history. So here’s a quick rundown of everything we know about the gameplay changes.