Nintendo announced today a brand new game for the Nintendo 3DS. It's called Steel Diver: Sub Wars and is described as a tactical FPS with 4 vs 4 team battles.
There's actually two types of this game a free version and a premium version. The free version will offer two types of submarines, "few" crew members, limited customizable submarine patterns, and two single-player missions. The premium version will have 18 total submarines, 30-plus crew members, fully customizable submarine patterns, and all of the single-player missions. Both versions will have online and local multiplayer support.
Steel Diver: Sub Wars will be available tonight via the 3DS eShop.