Alien Syndrome


The Arcade Video Game by SEGA Enterprises, Ltd. See Timeline

[Coin-Op] Arcade Video Game

Alien Syndrome © 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.
Alien Syndrome machine
Click to enlarge (members only)
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 : Motorola 68000 (@ 10 Mhz)
Sound CPU : Zilog Z80 (@ 4 Mhz), N7751 (@ 400 Khz)
Sound Chips : Yamaha YM2151 (@ 4 Mhz), UPD7759 (@ 640 Khz)

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

Note : this game also runs on Sega System 16B hardware.
Alien Syndrome was released in January 1987.

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

Soundtrack releases :
japan 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]
information 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


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


Sega Game Gear usa (1992) "Alien Syndrome"
Sega Game Gear europe (1992) "Alien Syndrome [Model 2324]"
Sega Game Gear japan (March 19, 1992) "Alien Syndrome [Model T-44037]"


Amstrad CPC europe (1988)
Atari ST europe (1988)
Commodore Amiga usa europe (1988)
Commodore C64 usa europe (1988)
MSX europe (1988)
Sinclair ZX Spectrum europe (1989)
Sharp X68000 japan (March 25, 1992)
PC [MS-DOS, 5.25"] usa (1989)
Game's ROM.
Machine's picture.

Page last modified on April 17, 2015