game
icon
title Alien Syndrome (set 4, System 16B, unprotected)
set name aliensyn
manufacturer Sega
year 1987
genre Maze (hof)
category Maze / Shooter Large (hof)
driver status good
driver source segas16b.c
snapshots MW: in game / CT: in game | title | select / EJ: in game / PS: in game | title | select | scores
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rating

73.9% after 90 votes
 
clones Alien Syndrome (set 1, System 16A, FD1089A 317-0033)
Alien Syndrome (set 2, System 16A, FD1089A 317-0033)
Alien Syndrome (set 3, System 16B, FD1089A 317-0033)
Alien Syndrome (set 5, System 16A, FD1089B 317-0037)
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display
colour emulation good
palette 6144
display type raster
orientation horizontal
resolution 320x224
frequency 60.054389Hz
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sound
sound emulation good
channels mono
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controls
players 2
nplayers 2P sim
controls 8 way joystick
buttons 1
coin slots 2
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hardware
cpu 68000 @ 10MHz
cpu Z80 @ 5MHz
audio YM2151 @ 4MHz
audio UPD7759 @ 0.64MHz
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data
version added .033b03
last change(s) .095
roms
name size crc set flags sha1
epr11083.a4  32768  cb2ad9b3  aliensyn    66284b4e1071b3cb4b36960a2dba8949325f9e86 
epr11080.a1  32768  fe7378d9  aliensyn    acfee79e5fe9fdf95926562c02599e96e96f76b5 
epr11084.a5  32768  2e1ec7b1  aliensyn    666a9e402d7d02d74c0a2468853a3843b161c1a2 
epr11081.a2  32768  1308ee63  aliensyn    36a4c8cf3a310398e264c57c7c6f53c05dbc0108 
epr11085.a6  32768  cff78f39  aliensyn    78431ce6c03232150a8db15499da9371977b570b 
epr11082.a3  32768  9cdc2a14  aliensyn    c06693f45675e31d591703c27bb3f6ec02fc1215 
epr10702.b9  65536  393bc813  aliensyn    672782c8fb2a6e454b27e073acc26130cacf3e50 
epr10703.b10  65536  6b6dd9f5  aliensyn    964409c6630caa13caf7d644d0c6fb071860b61b 
epr10704.b11  65536  911e7ebc  aliensyn    f03d3d3a09d19f7b705f9cb29f73140a3073463f 
epr10709.b1  65536  addf0a90  aliensyn    a92c9531f1817763773471ce63f566b9e88360a0 
epr10713.b5  65536  ececde3a  aliensyn    9c12d4665179bf433c42f5ddc8a043ad592aa90e 
epr10710.b2  65536  992369eb  aliensyn    c6796acf6807e9ba4c3d241903653f91adf4764e 
epr10714.b6  65536  91bf42fb  aliensyn    4b9d3e97768323dee01e92378adafecb26bcc094 
epr10711.b3  65536  29166ef6  aliensyn    99a7cfd7d811537c821412a320beadb5a9c09af3 
epr10715.b7  65536  a7c57384  aliensyn    46f8efa691d7bbb0a18119c0ff12cff7c0d129e1 
epr10712.b4  65536  876ad019  aliensyn    39973ddb5a5746e0e094c759447bff1130c72c84 
epr10716.b8  65536  40ba1d48  aliensyn    e2d4d2689bb9b9bdc85e7f72a6665e5fd4c583aa 
epr10723.a7  32768  99953526  aliensyn    4a980370923fd5d3dc9e25d42a032c9e78c7ff47 
epr10724.a8  32768  f971a817  aliensyn    502c95638e4fd5f87e5fc837cb44b39a5d62f4e4 
epr10725.a9  32768  6a50e08f  aliensyn    d34b2ccadb8b07d5ad99cab5c5b5b79642c65574 
epr10726.a10  32768  d50b7736  aliensyn    b1f8e3b0cf2ffee5382098100cfabe21b383cd51 
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cabinet art
cabinet aliensyn.png aliensyn.png
marquee aliensyn.png
control panel aliensyn.png
flyer aliensyn.png
PCB aliensyn.png
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additional information
info 0.33b3 [Mirko Buffoni]

WIP:
  • 0.127u1: Atari Ace moved FD1089 decryption keys to external files. Added 317-0033.key to clones Alien Syndrome (set 1, System 16A, FD1089A 317-0033), (set 2, System 16A, FD1089A 317-0033) and (set 3, System 16B, FD1089A 317-0033). Added 317-0037.key to clone Alien Syndrome (set 5, System 16A, FD1089B 317-0037).
  • 0.122u4: Nicola Salmoria added partial key for clone Alien Syndrome (set 5, System 16A, FD1089B 317-0037).
  • 0.119u4: Added clone Alien Syndrome (set 5, System 16A, FD1089B 317-0037).
  • 0.113u1: Don Maeby fixed 'Timer' dipswitch in clone Alien Syndrome (set 1).
  • 0.93: Shinobiz fixed Alien Syndrome rom names.
  • 0.92u1: Charles MacDonald and Nicola Salmoria added complete FD1089A 317-0033 table to Alien Syndrome. Thanks to Steve Ellenoff for lending the Alien Syndrome CPU.
  • 0.92: Renamed (aliensyj) to (aliensy1), (aliensya) to (aliensy2) and (aliensyb) to (aliensy3).
  • 0.91u2: Fixed cpu2 rom address to $30000.
  • 0.90u1: Added partial FD1089A table derived by comparison with the unencrypted versions for Alien Syndrome (set 3 and 4) - Games now playable. Actual working cpu are needed to obtain full tables. Changed description from clone 'Alien Syndrome (set 3, FD1089?)' to 'Alien Syndrome (set 2, System 16B, FD1089A 317-0033?)', 'Alien Syndrome (Japan)' to 'Alien Syndrome (set 3, System16A, FD1089A 317-0033)' and 'Alien Syndrome (set 2)' to 'Alien Syndrome (set 4, System16A, FD1089A 317-0033?)'.
  • 0.88u7: Added N7751 (400000 Hz) CPU2 and DAC sound to the clones.
  • 0.88u6: Changed Z80 CPU2 clock speed to 5MHz and palettesize to 6144 colors.
  • 0.72u1: Swapped cpu2 roms ($18000, 20000).
  • 0.36b15: Added clone Alien Syndrome (Japan).
  • 0.36b2: Andrew Prime added clone Alien Syndrome (set 2) and (set 3).
  • 0.33b3: Mirko Buffoni added Alien Syndrome (Sega 1987).
LEVELS: 7

Other Emulators:
  • System 16
Recommended Games (Aliens):

Heiankyo Alien

Victory Road

Alien Syndrome

Alien Syndrome (Mega-Tech)

Xenophobe

SAR - Search and Rescue

Aliens

Alien 3

Alien vs. Predator

Alien Storm

Alien Storm (Mega-Tech)

Space Gun

Dragon Gun

Teraburst

Invasion - The Abductors

Romset: 1024 kb / 21 files / 460 zip
history Alien Syndrome (c) 1987 Sega.


The earth command faces a grave crisis. Hideous alien life forms have taken control of Earth's space station and hold its inhabitants hostage. Only 2 brave space troopers step forward to face the challenge. Ricky & Mary must save the hostages and destroy the alien menace once and for all. This overhead shoot'em up game features good graphics & sound as well as simple yet fast gameplay with plenty of weapons to find!


- TECHNICAL -


Alien Syndrome was sold in a dedicated cabinet by Sega, but was also sold as a conversion kit by Sun Corporation (licensed from Sega) for the America market only.


Cabinet dimensions : 32,5'' (83cm) Deep x 24'' (63cm) Wide x 73'' (185cm) High.

Cabinet weight : 211 lbs (96 kg).


Sega System 16A hardware


Main CPU : 68000 (@ 10 Mhz)

Sound CPU : Z80 (@ 4 Mhz), N7751 (@ 400 Khz)

Sound Chips : YM2151 (@ 4 Mhz), UPD7759 (@ 640 Khz)


Screen orientation : Horizontal (19'')

Video resolution : 320 x 224 pixels

Screen refresh : 60.00 Hz

Palette colors : 6144


Players : 2

Control : 8-way joystick

Buttons : 1


Note : this game also runs on Sega System 16B hardware.


- TRIVIA -


Released in January 1987.


Donn Nauert holds the record for this game with 2,269,200 points on February 2, 1988.


Soundtrack releases :

After Burner / Sega Game Music Vol.3 [Alfa Records - 28XA-109 - Oct 10, 1987]

Legend of Game Music 2 - Platinum Box [Scitron Digital Contents - SCDC-00473 to 00482 - Jan 18, 2006]


- TIPS AND TRICKS -


* Hint : Shoot and grab everything as quickly as possible. If you manage to finish a level before the timer reaches 100, you get a 60K bonus.


- SERIES -
  1. Alien Syndrome (1987)
  2. Alien Syndrome (2007, Nintendo Wii, Sony PSP)
    3. - STAFF -
    • Music by : Tohru Nakabayashi
    • - PORTS -
    • * Consoles :
    • Sega Master System (1987)
    • Nintendo Famicom (1988)
    • Sega Game Gear (1992)
    • Sony PlayStation 2 (2004, "Sega Ages 2500 Vol. 14 : Alien Syndrome")
    • * Computers :
    • Amstrad CPC (1987)
    • Commodore Amiga (1987)
    • Atari ST (1987)
    • Sinclair ZX Spectrum (1988)
    • Commodore C64 (1988)
    • Sharp X68000 (1992)
    • PC [MS-DOS, 5.25'']
    • - SOURCES -
    • Game's rom.
    • Machine's picture.
    • Edit this entry at Arcade-History.com: http://www.arcade-history.com/?n=alien-syndrome&page=detail&id=61&o=2
resource links view in MAWS
view in CAESAR
view high score and replay at MARP
view in Progetto EMMA (Italian)
view in arcade-history.com
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cheats
cheats
code comments
00000000:FFC000:00000009:FFFFFFFF  Infinite Credits
00000000:FFC113:0000009A:FFFFFFFF  Infinite Time
00000000:FFCBB0:00000001:FFFFFFFF  Infinite Map Time
00000000:FFC131:00000000:FFFFFFFF  One Comrade Opens The Exit
60000000:000000:00000000:00000000 
00000000:FFC234:00000005:FFFFFFFF  Infinite Lives PL1
00000000:FFC235:00000001:FFFFFFFF  Invincibility PL1
00000000:FFC243:00000000:FFFFFFFF  Rapid Fire PL1
60000000:000000:00000000:00000000 
00000000:FFC2B4:00000005:FFFFFFFF  Infinite Lives PL2
00000000:FFC2B5:00000001:FFFFFFFF  Invincibility PL2
00000000:FFC2C3:00000000:FFFFFFFF  Rapid Fire PL2
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