Steel Diver is a submarine simulation video game developed and published by Nintendo, with assistance by Vitei, for the Nintendo 3DS. The game was released in March 2011 as a launch title for the 3DS in North America, with releases in Europe, Australia, and Japan, coming in May the same year. In the game, the player controls a submarine via a set of touch-screen based levers and wheels.
Steel Diver received generally mixed reviews from critics. A sequel, Steel Diver: Sub Wars, was released in 2014 via the Nintendo eShop.