688 Attack Sub

From Sega Retro

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688AttackSub MDTitleScreen.png
688 Attack Sub
Publisher: Sega
System(s): Sega Mega Drive
Genre: Simulation

Number of players: 1
Release Date RRP Code
Sega Mega Drive
$49.95[1] 1401
Sega Mega Drive
£39.99 1401
Sega Mega Drive
?F 1401
Sega Mega Drive
DM ? 1401
Sega Mega Drive
?Ptas 1401
Sega Mega Drive
$? ?

688 Attack Sub is a 1991 submarine simulator game, originally developed by Electronic Arts for MS-DOS computers before being brought to the Sega Mega Drive. It was released alongside M-1 Abrams Battle Tank in the extremely short-lived "Simulator Series" in 1991.

Like, M-1 Abrams Battle Tank, 688 Attack Sub was licensed by Sega of America in 1990, shortly before EA began publishing Sega games for themselves.


The player can control a US Los Angeles-class or Soviet Alfa class nuclear powered attack submarine. There are 10 missions that take place in a Cold War scenario. Players can use the periscope, launch torpedoes, activate sonar to view oncoming submarines or torpedoes, among various other things. As it is a simulator tasks are accomplished by pointing (moving the D-pad; holding C will lock it to the next onscreen item in the particular direction) and clicking (A) with an on-screen cursor. The cursor changes icons to indicate what is currently selected.

Production credits

Source: In-game credits with cheat.[3]
  • Programmed by: Ed Fletcher

Magazine articles

Main article: 688 Attack Sub/Magazine articles.

Physical scans

Sega Retro Average 
Publication Score Source
84 №2, p52-54[4]
70 №152, p109/111[5]
85 №1, p38/39[6]
85 №20, p136[7]
68 №5, p90
88 №1, p76[8]
84 №11, p48-50[9]
90 №14, p80[10]
80 №23, p52
75 №26, p38
83 №1, p18[11]
83 №18, p64
70 №30
Sega Mega Drive
Based on
14 reviews

Mega Drive, US
688AS MD US Box.jpg
688 Attack Sub MD US cart.jpg
688 Attack Sub MD US Manual.pdf
Mega Drive, EU
688AS MD EU Box.jpg
688AttackSub MD EU Cart.jpg

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Mega Drive
CRC32 f2c58bf7
MD5 7a43a9b9a1fd951ada76d0baf2f8ff26
SHA-1 6795b9fc9a21167d94a0b4c9c38d4e11214e1ea7
1MB 1991 Cartridge (US/EU)


NEC Retro has more information related to 688 Attack Sub.
  1. File:VG&CE US 30.pdf, page 39
  2. File:EGM US 024.pdf, page 24
  4. File:ConsolesPlus FR 002.pdf, page 52
  5. File:CVG UK 152.pdf, page 109
  6. File:Joypad FR 001.pdf, page 38
  7. File:Joystick FR 020.pdf, page 136
  8. File:MegaTech UK 01.pdf, page 76
  9. File:MeanMachines UK 11.pdf, page 48
  10. File:PlayerOne FR 014.pdf, page 80
  11. File:SegaPro UK 01.pdf, page 18