World of War Tanks — Free App of the Day
Ever want to get into a giant tank and run over stuff and blow things to smithereens? You don't have to be some crazy nut to do it, you can experience the mayhem on your iPhone or iPad, for free!
World of War Tanks lets you play as a tank master, rolling around in your death machine in over 45 levels. With three different terrains, tons of different enemies, upgradeable tanks, stealth and strength upgrades (whatever that means), and Game Center support, you'll be wreaking havoc in no time!
Not sure what the story is, but you probably don't need one in a tank game besides destroying things. World of War Tanks normally goes for $4.99, so save five bucks and grab it for your iPhone & iPad before the price goes back up!