Konami and Gree's Metal Gear Solid Social Ops has snuck onto the Japanese App Store, bringing with it plenty of card based stealthy espionage action.
As you'd expect from Gree, the game is a tactical card battler that takes situations and characters from the Metal Gear universe and pits them against one another.
You need to build up your deck of heroes in order to take down enemies that range from single soldiers to multiple bipedal tanks. All in a day's work really.
There's no word yet on when or if the game will get a worldwide release, but with the popularity of the Metal Gear series worldwide, and the pick up and play nature of card battlers, we can't imagine why it won't come out elsewhere.
While you wait for that, why not check out the Japanese trailer below to get an idea of what the game's all about.