In case you missed the first outing, the story is the stuff of classic, yet well-worn military sci-fi. “Halo,” the gold standard, looked positively tame compared to the raw, visceral action in “Gears.” The Locust enemies (or grubs) and the human soldiers, the titular Gears, were meaner and more menacing than Master Chief and his buddies.
When “Gears of War” came out two years ago, it was a serious contender for the ultimate sci-fi shooter.