SSN-21: SeaWolf

SSN-21 Seawolf is a submarine simulator game designed by John W. Ratcliff and published for MS-DOS systems by Electronic Arts on April 3, 1994. A 3DO Interactive Multiplayer version was planned but never released.

The player takes command of a US Seawolf-class submarine and fights in 33 missions with targets under and above water including Russian attack submarines, destroyers, guided missile cruisers, aircraft carriers and frigates.

The game is a sequel to Electronic Arts' 688 Attack Sub, and has a similar mission structure and variety. Missions might require the player to defend friendly surface ships from attack, or sink those of the enemy. Other missions have their focus entirely underwater, with the player similarly either defending friendly submarines or hunting enemy missile and attack boats. While missions in Seawolf are pre-scripted, there are a number of initial setups which provides some variation in a mission's precise starting conditions.