i got this game on friday havent been able to put it down. controls are easy to use. not over complicated units its like rock paper scissors. bases are limited to 3 build spaces but you can upgrade to 5 and then 7 and can only be built in certain pre determined locations so you dont need to worry about people base walking to your base but there are multiple bases on the map. the campaign is good and an awsome story, ive ran through it on normal without much resistance but i wreckon heroic and legendary will be much harder. co-op campaign was a good surprise, both you and a friend control the same base and have to work together but individual units are controlled by the player that made them although control can be passed to the other player at any time and you must work together as resources and unit limits are shared.
plus comparing this with C&C there is no comparison, HALO WARS wins