Steel Diver for $19.99

Steel Diver is submarine Simulation - Combat game that utilizes the power and flexibility of the Nintendo 3DS* to put you behind the periscope of a submarine on the hunt. The game features multiple ways to play including standard mission gameplay; Periscope Strike, a mode in which you use the 3DS gyro sensor to alter your view in order to complete tasks; and Steel Commander, a one-on-one turn-based local wireless mode supporting two players.