From GameBrew - a wiki dedicated to Video Game Homebrew.
Seawolf is a remake of the original Sea Wolf coin-op arcade game released in 1976 by Midway.
In Sea Wolf you take the controls of a submarine and torpedo enemy ships. There are five different types of ship and each kind has a specific length, speed and score value. Floating mines just below the water's surface can block a torpedo from hitting a ship. After launching five torpedoes, you must wait a few moments to reload.
This version is a mixture of old skool black & white gameplay and a modern interface. It has a couple of features like positional audio with authentic sounds, animated and largely functional instrument panel, high score, Easter Egg surprise and a secret operator settings dipswitch.
Left/Right - move sideways
A - Shoot
Tested on R4 SDHC (firmware 1.32).