Days of Ruin is a very brave game. It completely throws away all of the setting and tone, alongside much of the mechanics, of the original three Advance Wars games, in favor of something of its own. Unfortunately, it sucks. Despite the game technically being balanced to be more offensive, the AI is super defensive, and since CO powers no longer let you make a big push, a lot of the single player maps are complete agony because the enemy can and will stonewall you for hours, all of the OST sounds like dogshit because they're trying to play real music through a DS' speakers and the story... actually it's pretty decent. But the game isn't very good.