Dark Conflict moves away from the often far too cute story line of the previous games. It is war after all. Control and game mechanics remain mostly the same with some tweaks. The single player game features tutorials to take newbs through the learning curve. Its an enjoyable campaign and also unlocks COs for use on line or in one off games.
The units function as before, gone are the Neo Tanks but air craft carriers that can build planes are added along with bikes that act like fast infantry. That means they can capture buildings, but move slowly off road. APCs are now able to build temporary airports/docks which can facilitate repairs but are unable to build new units. These new units allow for some interesting new tactics.
Perhaps the biggest change is in the COs. Gone are the often too devastating dual strikes of the previous DS game and CO bonuses potentially giving ALL your units more powerful attacks/defence. Instead your CO is added to a unit (like a tank or plane) and adds certain bonuses to near by units. This change makes for a more tactical game, forcing you to carefully place your CO for maximum effect. It also means both sides are far more balanced so you have to out think your opponent rather than just come up with a the best CO powers and dual strike.
On the plus side it means you don't have to sit and watch as your whole army gets eaten by a dual strike. On the other hand I did quite enjoy the scheming that went on to get a proper brutal dual strike in but I think this is more satisfying.
The graphics are no better than before, though a zoom feature is included which I find of no use at all. Still it doesnt detract from the game.
A great addition to the series, go buy it.