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Alien Syndrome (set 1)

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Alien Syndrome (set 1)

| 1987

Release type:
Units produced: Sega
Controls/Input Device: Control(joy8way), Buttons(3)
Number of Players: 2
More Creator:
More Coder/Software:
License from/Copyright:
SoundMix: Stereo
More Graphics/Artwork:
More Music/Sound:
Acting Talent involved:
More Machine Details:
More System Details:
Game Awards Nominations:
Game Awards Won:
Title a.k.a.:
Avg. Playtime:
Similar Games:
MAME folder name: aliensyn

Display: raster 320x224 @ 60.05Hz (60.05 pixclock)
Sound: 1 channels

Emulated in MAME via driver segas16b.c:
Status: good; Emulation: good
Graphic: good; Sound: good; Color: good
Palette size: 6144; Savestate: unsupported

epr10702.b9 with 65536kb
sha1:672782c8fb2a6e454b27e073acc26130cacf3e50 crc:393bc813
epr10703.b10 with 65536kb
sha1:964409c6630caa13caf7d644d0c6fb071860b61b crc:6b6dd9f5
epr10704.b11 with 65536kb
sha1:f03d3d3a09d19f7b705f9cb29f73140a3073463f crc:911e7ebc
epr10709.b1 with 65536kb
sha1:a92c9531f1817763773471ce63f566b9e88360a0 crc:addf0a90
epr10710.b2 with 65536kb
sha1:c6796acf6807e9ba4c3d241903653f91adf4764e crc:992369eb
epr10711.b3 with 65536kb
sha1:99a7cfd7d811537c821412a320beadb5a9c09af3 crc:29166ef6
epr10712.b4 with 65536kb
sha1:39973ddb5a5746e0e094c759447bff1130c72c84 crc:876ad019
epr10713.b5 with 65536kb
sha1:9c12d4665179bf433c42f5ddc8a043ad592aa90e crc:ececde3a
epr10714.b6 with 65536kb
sha1:4b9d3e97768323dee01e92378adafecb26bcc094 crc:91bf42fb
epr10715.b7 with 65536kb
sha1:46f8efa691d7bbb0a18119c0ff12cff7c0d129e1 crc:a7c57384
epr10716.b8 with 65536kb
sha1:e2d4d2689bb9b9bdc85e7f72a6665e5fd4c583aa crc:40ba1d48
epr10723.a7 with 32768kb
sha1:4a980370923fd5d3dc9e25d42a032c9e78c7ff47 crc:99953526
epr10724.a8 with 32768kb
sha1:502c95638e4fd5f87e5fc837cb44b39a5d62f4e4 crc:f971a817
epr10725.a9 with 32768kb
sha1:d34b2ccadb8b07d5ad99cab5c5b5b79642c65574 crc:6a50e08f
epr10726.a10 with 32768kb
sha1:b1f8e3b0cf2ffee5382098100cfabe21b383cd51 crc:d50b7736
epr11080.a1 with 32768kb
sha1:acfee79e5fe9fdf95926562c02599e96e96f76b5 crc:fe7378d9
epr11081.a2 with 32768kb
sha1:36a4c8cf3a310398e264c57c7c6f53c05dbc0108 crc:1308ee63
epr11082.a3 with 32768kb
sha1:c06693f45675e31d591703c27bb3f6ec02fc1215 crc:9cdc2a14
epr11083.a4 with 32768kb
sha1:66284b4e1071b3cb4b36960a2dba8949325f9e86 crc:cb2ad9b3
epr11084.a5 with 32768kb
sha1:666a9e402d7d02d74c0a2468853a3843b161c1a2 crc:2e1ec7b1
epr11085.a6 with 32768kb
sha1:78431ce6c03232150a8db15499da9371977b570b crc:cff78f39
Mameinfo.dat entry:
0.37b10 [Yochizo]


- 0.147u2: hap fixed clone Omega Fighter Special. The game fails to boot or finish post. After showing bad rom errors, the game resets.

- 0.147u1: Fixed maincpu rom loading.

- 0.122u7: Fixed gfx1/2/3/4/5 rom loading.

- 0.89u3: Changed Z80 CPU2 clock speed to 5MHz.

- 0.37b10: Yochizo added 'Omega Fighter' (UPL 1989) and clone Omega Fighter Special.

- 21st November 2000: Yochizo fixed some graphics bugs in the Omega Fighter / Atomic Robo-kid driver.

- 8th November 2000: Yochizo sent in a driver for Omega Fighter and Atomic Robo-kid.

- 25th April 1999: Dumped Omega Fighter Special.

LEVELS: 8 (restarts once)

Other Emulators:

* FB Alpha


* Raine

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Romset: 2016 kb / 8 files / 457.8 zip

Credits Mameinfo and Mametesters Project Robert J. Rabgno et al.
History.dat entry:
Alien Syndrome (c) 1987 Sega.

Alien Syndrome is a overhead-view run and gun game for one or two players in which a number of Mankind's space ships and bases have been overrun by an alien race, who have taken the human inhabitants hostage.

Players control two soldiers named Ricky and Mary and must fight their way through large eight-way scrolling levels to rescue their captured comrades. Once a set number of hostages have been rescued, an exit opens and players can pass through it to fight the end-of-level guardian. Once the guardian is defeated, play moves onto the next stage.

A time-bomb is automatically set at the start of each stage, which must then be completed before the bomb's timer runs down. Failure to finish the level in time results in the death of the player characters. Weapon upgrades and maps of the current level are available at certain points and are accessed via hatchways in the wall.

Alien Syndrome consists of 6 full stages plus a 7th final mini-stage, consisting solely of a fight to the death against the game's final, massive guardian.


Runs on the Sega "System 16A" hardware.
Game ID: 317-0033

Players: 2
Control: 8-way joystick
Buttons: 1


Alien Syndrome was released in January 1987 in Japan.

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.

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

Soundtrack releases :
[JP] October 10, 1987 - After Burner [Sega Game Music Vol.3] [28XA-109]
Legend of Game Music 2 - Platinum Box [Scitron Digital Contents - SCDC-00473 to 00482 - January 18, 2006]


* 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.


1. Alien Syndrome (1987)
2. Alien Syndrome (2007, Nintendo Wii, Sony PSP)


Music by: Tohru Nakabayashi


* Consoles :
Sega Mark III [JP] (October 18, 1987) "Alien Syndrome [Model G-1339]"
Sega Master System [US] [EU] (1988) "Alien Syndrome [Model 7006]"
Sega Master System [AU] (1988)
Sega Master System [BR] (1988) by Tec Toy
Nintendo Famicom [JP] (1988) "Alien Syndrome [Model SAN-AZ]"
Nintendo NES [US] (1988)
Sony PlayStation 2 (July 29, 2004) "Alien Syndrome [Sega Ages 2500 Vol.14] [Model SLPM-62500]"
Microsoft XBOX 360 [US] (February 10, 2009) as an unlockable extra in "Sonic's Ultimate Genesis Collection [Model 68034]"
Sony PlayStation 3 [KO] (February 10, 2009) as an unlockable extra in "Sonic's Ultimate Genesis Collection" by SCEI
Sony PlayStation 3 [US] (February 10, 2009) as an unlockable extra in "Sonic's Ultimate Genesis Collection [Model BLUS-30259]"
Microsoft XBOX 360 [EU] (February 20, 2009) as an unlockable extra in "SEGA Mega Drive Ultimate Collection [Model 384-40210]"
Sony PlayStation 3 [EU] [AU] (February 20, 2009) as an unlockable extra in "SEGA Mega Drive Ultimate Collection [Model BLES-00475]"
Microsoft XBOX 360 [AU] (February 26, 2009) as an unlockable extra in "Sega Mega Drive Ultimate Collection"

* Handhelds :
Sega Game Gear [US] (1992) "Alien Syndrome"
Sega Game Gear [EU] (1992) "Alien Syndrome [Model 2324]"
Sega Game Gear [JP] (March 19, 1992) "Alien Syndrome [Model T-44037]"

* Computers :
Amstrad CPC [EU] (1988)
Atari ST [EU] (1988)
Commodore Amiga [US] [EU] (1988)
Commodore C64 [US] [EU] (1988)
MSX [EU] (1988)
Sinclair ZX Spectrum [EU] (1989)
Sharp X68000 [JP] (March 25, 1992)
PC [MS-DOS, 5.25"] [US] (1989)


Edit this entry: http://www.arcade-history.com/?&page=detail&id=61&o=2

Licensed from Alexis Bousiges under a CC Attribution 3.0 License
cheat.dat entry:
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

Credit Pugsy's MAME Cheat file