The newest title out of Gameloft is pretty self-explanatory. Tank Battles is about, you guessed it, tank battles. This game invites you to design and control your own custom war machine and fight your way through 80 top-down missions of increasing difficulty. Fighting computers not doing it for you? There's multiplayer too.
Tank Battles doesn't take a photo-realistic approach to the whole military warfare thing – it's a bit wacky and over-the-top. Want a purple tank with three gun emplacements? That can be arranged. The multiplayer element comes in both co-op and competitive modes with weekly and lifetime leaderboards.
This is a free Gameloft game, and you ought to know what that means. Yeah, in-app purchases, but you get to check it out for free.