Here we find that most elusive of creatures: a 4X (explore, expand, exploit, and exterminate) strategy game for iOS that's not compromised by a free-to-play model. Autumn Dynasty Warlords scores a victory on that front alone. This tale of martial ambition in ancient China may have a harder time conquering on some other fronts, but its simple strengths usually suffice to rout its flaws. It's essentially Shogun: Total War Lite, delivering a compact take on that PC favorite. Warlords is designed for conquests on 10-minute subway rides, and thus it lacks the depth of, say, Sid Meier's Civilization – though what's here does the trick.