‎Titan Fury
apps.apple.com
‎The Time of Storms has passed, and a new world is emerging. Command epic Titans, train your armies, and become the hero who will save the world of Aurica! Titan Fury is a mobile action strategy game where gigantic Titans command the battlefield, and armies crash together in epic battles. Whether yo…

No upfront cost. In app purchases are available, but not mandatory. Story and gameplay is awesome. No annoying ads (you only get ads if you choose to watch some for extra coins)