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European SG-1000 box art of N-Sub.
SG1000 box art of N-Sub.
Developer(s) Sega
Publisher(s) Sega
Platform(s) Arcade, Sega SG-1000, Sega SC-3000
Release Arcade
December 1980
Sega SG-1000/Sega SC-3000
Genre(s) Fixed Shooter
Mode(s) Up to 2 players, alternating turns
Cabinet Standard
CPU Z80 @ 1.93356 MHz
Sound Preliminary, mono
Display Raster (Vertical) standard resolution (Used: 224×256)

N-Sub (N-サブ?) is a 1980[2] arcade game developed and published by Sega. N-Sub was later ported by Sega as a launch game for the SG-1000/SC-3000 in 1983.[1]


The object of the game is to maneuver an on-screen submarine, the "N-Sub," with the joystick and sink the enemy fleet with torpedo fire in the Cobalt Blue Sea. The player can fire torpedoes vertically and horizontally from their submarines by pressing two separate "FIRE" buttons. The player can hold the button longer to fire three torpedoes in rapid succession. Enemy ships attack the N-Sub with missiles, torpedoes and depth charges. A round of gameplay ends when the player defeats a wave of twelve enemy ships. Successive rounds increase in difficulty. The player has multiple lives, or chances to continue after being hit by an enemy ship, and can receive more lives by reaching high scores. The game ends when the player exhausts their lives.[citation needed]

Screenshot of N-Sub (monochrome arcade version).


  1. ^ a b Marley, Scott (December 2016). "SG-1000". Retro Gamer. No. 163. Future Publishing. p. 58. 
  2. ^ N-Sub at the Killer List of Videogames