Alien 3

From Sega Retro

For the Sega System 32 arcade game, see Alien 3: The Gun.


  • Mega Drive
  • Master System
  • Game Gear
Alien 3 MD Title.png
Alien3 SMS Title.png
Alien 3 GG Title.png
Alien 3
System(s): Sega Mega Drive, Sega Master System, Sega Game Gear
Publisher: Arena Entertainment
Sega Game Gear
Acclaim Entertainment (JP)
Licensor: Twentieth Century Fox
Sound driver: Krisalis sound driver
Genre: Action[1]

Number of players: 1
Release Date RRP Code
Sega Mega Drive
$49.9549.95[2] T-81096
Sega Mega Drive
Sega Mega Drive
DM 119.95119.95[5] T-81096-50
Sega Mega Drive
Sega Mega Drive
£39.9939.99[4][3] T-81096-50
Sega Mega Drive
Sega Mega Drive
Sega Mega Drive
Sega Master System
Sega Master System
DM 89.9589.95[8] MK-27043-50
Sega Master System
Sega Master System
£34.9934.99[6][7] MK-27043-50
Sega Master System
Sega Master System
Sega Master System
Sega Game Gear
¥4,5004,500 T-81047
Sega Game Gear
$39.9539.95[9] T-81048
Sega Game Gear
Sega Game Gear
DM 89.9589.95[8] T-81048-50
Sega Game Gear
£27.9927.99[11][12] T-81048-50

This short article is in need of work. You can help Sega Retro by adding to it.

Alien3 (エイリアン3) is a sidescrolling video game loosely based on the movie of the same name. It was developed by Probe Software and published by Arena Entertainment for the Sega Mega Drive, Sega Master System, Sega Game Gear, Amiga and Commodore 64 in 1992. Different games based on the movie were released on the Super NES (which has a Metroid style gameplay) and the Game Boy (top down shooter with limited adventure mechanics).

Certain liberties were taken from the original movie due to gameplay reasons. Movie had little to none gunfights and had only one alien.

It has been suggested that the game was completed before the movie was released, as it has completely different ending than the movie.


The player's task in game is to rescue hostages and defeat aliens which have taken over human colonies. There is a set amount of time to complete this task in each level. Failing to rescue all hostages results in instant death, as well as not reaching the exit before time runs out. Some hostages are extraordinarily well hidden, e.g. in chambers behind fully solid walls. Only stage 2-2 requires the player to not rescue hostages and run straight for the exit. Stages 3-2 and 5-1 are basically just rescuing hostages with no enemies to fight (5-1 has one Alien just before the last Elevator)

The player carries all 4 available weapons by default with a limited supply of ammunition: Machine gun, flamethrower, rockets and grenades, all of these are shot with B aiming with the D-pad and holding down B for rapidfire. It is possible to also pick up limited supplies of other ammunition throughout the levels, cycling between each weapon (and the standard gun) with A and using them with B. C jumps. To rescue a hostage or pick up an item, simply touch it.

In 8-bit versions, A is used for firing selected weapon and B jumps. Crouching and pressing B changes the weapon.

There are 5 worlds with 4 stages each. A boss type Alien waits in the 4th stage of each world, although the same boss is recycled for all encounters. The game has no continues and no password system and must thus be cleared in one sitting, which can take ~1 hour when familiar with the stages.

The difficulty level affects the amount of ammunition and time granted to clear a stage.


M41 Pulse Rifle: United States Colonial Marines standard issue rifle that fires 10x24mm caseless cartidges. Low damage but can be used to keep most aliens at bay due to its rapid fire capability. Most versatile weapon as it can be fired while moving.

M240 Incinerator Unit: Very short range but fires rapidly.

U1 Grenade Launcher: Underbarrel 30x71mm grenade launcher for the M41. Fires slowly but has devastating firepower.

M40 HEDP Grenade: Palm sized hand grenade. Ripley throws them in a parabolic arc or in a straight line when crouching. Most useful for clearing aliens in the tunnels.

M314 Motion Tracker: Not really a weapon but rather a radar that detects prisoners (red dots) and aliens (white dots). Requires batteries to keep working. (In the Master System version, it can be activated or deactivated the same way for changing weapons.)

Due to a slight delay before firing and moving, the high amount of rescue missions and rather weak firepower in general, the game puts heavy focus on memorization.


  • The game is not region protected and runs on any region hardware.
  • The Sega Master System and Sega Game Gear versions are basically identical in terms of content to the Sega Mega Drive. Master System version has a "two-player mode". However it is not simultaneous two-player play. It is turn based: player two starts after player one dies. (Similar to the Master System version of Alien Syndrome.)
  • The Sega Mega Drive version appears to be the "definitive" version as it contains parallax scrolling backgrounds and additional stage details (e.g. animated lights and flowing liquids in world 4) not found in any other version. Sound quality is only marginally inferior to the Amiga release.

Production credits

Mega Drive version

  • Design and Production by: Probe Software
  • Programmer: Tim Round of Eden Software
  • Producer: Joe Bonar
  • Graphics: Lee Ames, Lloyd Baker, Richard Beston, Jason Green, Joe Bonar, Tim Round, Hugh Riley
  • Mapping: Richard Beston, Lloyd Baker, Joe Bonar
  • Music and Sound Effects: Matt Furniss
  • Sound Driver: Shaun Hollingworth
  • Design Support: Fergus McGovern, Tony Beckwith, Neil Young, Keith Burkhill, Tim Round, Mike Archer
  • Quality Assurance in the UK: Adrian Curry, Ian Wickenden
  • And in the US: Tom Gibson, Joe Libertella, Dan Feinstein, Don Nauert, Lucy Fenn, Jane Biddle, Seth Rubine
  • Technical Support: Carl Muller, Stuart Middleton
Source: In-game credits

Master System and Game Gear versions

Alien 3™
©™1992 Twentieth Century Fox
©1992 Acclaim Entertainment Inc
  • Design and Production by: Probe Software
  • Producer: Joe Bonar
  • Design Support: Fergus McGovern, Tony Beckwith, Neil Young, Keith Burkhill, Tim Round, Mike Archer
  • Programmer: Keith Burkhill
  • Graphics: Hugh Riley, Lisa Wand, Mark Jones
  • Mapping: Hugh Riley, Lisa Wand, Keith Burkhill
  • Music and Sound Effects: Matt Furniss
  • Technical Support: Carl Muller, Stuart Middleton
  • Quality Assurance in the UK: Adrian Curry
  • And in the US: Tom Gibson, Dan Feinstein, Don Nauert, Seth Rubine and many others
Source: In-game credits

Magazine articles

Main article: Alien 3/Magazine articles.

Promotional material

Main article: Alien 3/Promotional material.

Physical scans

Mega Drive version

Sega Retro Average 
Publication Score Source
90 [13]
86 [14]
89 №13, p66-68
89 [15]
92 [16]
90 №11, p63
88 [17]
89 №12, p18-20
91 [18]
94 №13, p54-56
91 [19]
62 [20]
79 [21]
89 №1, p65
94 №9, p26-29
89 [22]
77 [23]
83 [24]
92 [25]
82 №34, p22-23
87 №12, p30-32
77 №18, p64
Sega Mega Drive
Based on
22 reviews

Mega Drive, US
Alien3 MD US Box.jpg
Alien 3 MD US Cart.jpg
Alien3 md us manual.pdf
Mega Drive, EU
Alien 3 MD EU Box.jpg
Alien3 MD EU Cart.jpg
Mega Drive, PT
Alien3 MD PT cover.jpg
Mega Drive, SE
Alien3 MD SE rental cover.jpg
Mega Drive, AU

Mega Drive, BR
Alien3 MD BR Box.jpg
Alien3 MD BR Cart Top.jpg
Alien3 MD BR Cart.jpg
Alien3 md br manual.pdf

Master System version

Sega Retro Average 
Publication Score Source
90 [26]
84 №14, p74-75
80 №33, p177
65 [27]
72 №34, p24
90 №14, p70-71
95 [28]
77 [29]
Sega Master System
Based on
8 reviews

Master System, EU
Alien 3 SMS EU Box.jpg
Alien3 SMS EU Cart.jpg
Alien3 SMS EU Manual.pdf
Master System, PT

Master System, GR
Alien 3 SMS GR Box.jpg
Alien3 SMS EU Cart.jpg
Alien3 SMS EU Manual.pdf
Master System, AU
Alien3 SMS AU cover.jpg
Alien3 SMS AU Cart.jpg
Master System, BR
Alien 3 SMS BR Box.jpg
Alien3 SMS BR Cart.jpg
Alien3 sms br manual.pdf

Game Gear version

Sega Retro Average 
Publication Score Source
{{{{{icon}}}|L}} Division by zero.
Based on
0 review

<meta itemprop="ratingValue" content="Division by zero.">

Sega Retro Average 
Publication Version Score
Consoles + (FR)
Computer & Video Games (UK)
Electronic Gaming Monthly (US) NTSC-U
Mean Machines: The Essential Sega Guide (UK)
GamePro (US) NTSC-U
GamesMaster (UK) PAL
Joypad (FR)
Joystick (FR) PAL
Micromanía (segunda época) (ES)
Mean Machines Sega (UK)
Player One (FR)
Sega Magazin (DE)
Sega Pro (UK) PAL
Sega Pro (UK) PAL
Sega Zone (UK) PAL
Sega Force (UK) PAL
Sega Game Gear
Based on
16 reviews
Game Gear, JP
Alien3 GG JP Box Back.jpgNospine-small.pngAlien3 GG JP cover.jpg
Alien3 gg jp cart.jpg
Game Gear, US
Alien3 GG US Box Back.jpgNospine.pngAlien3 GG US Box Front.jpg
Alien3 GG US Cart.jpg
Alien 3 GG US Manual.pdf
Game Gear, EU
Alien3 GG EU Box Back.jpgNospine.pngAlien3 GG EU Box Front.jpg
Alien 3 GG EU cart.jpg

Technical information

ROM dump status

System Hash Size Build Date Source Comments
Sega Mega Drive
CRC32 a3b00d6e
MD5 f9e32be60028206b3716f64f2ba0ab00
SHA-1 1f4b969592f98d2692cb06eca550da9c03062593
512kB Cartridge (US/EU)
Sega Mega Drive
CRC32 b327fd1b
MD5 793b92cd4a66921db6ca4f582a690db5
SHA-1 26959752d0683298146c2a89599fa598d009651b
512kB 1992-10 Cartridge Rev. 01
Sega Master System
CRC32 b618b144
MD5 7d6b3351e820b6afa7cf80713dc139e3
SHA-1 be40ffc72ee19620a8bac89d5d96bbafcefc74e7
256kB Cartridge (EU)
Sega Game Gear
CRC32 11a68c08
MD5 653310b476cab68eeb8d3520c26b9755
SHA-1 f3b976fefc331f37c3e4d883791eba68890279a5
256kB Cartridge (US/EU)
Sega Game Gear
CRC32 06f6eebb
MD5 25decd5633847246b38fb9188496d2c8
SHA-1 f09885d76ea7af75fb605261a08143d3ccdc4ca8
256kB Cartridge (JP)


  1. 1.0 1.1 (Wayback Machine: 2013-01-01 20:24)
  2. 2.0 2.1 GamePro, "October 1992" (US; 1992-xx-xx), page 49
  3. 3.0 3.1 3.2 MegaTech, "August 1992" (UK; 1992-07-20), page 10
  4. Sega Mega Drive Advanced Gaming, "November 1992" (UK; 1992-xx-xx), page 33
  5. 5.0 5.1 Sega Magazin, "September/Oktober 1993" (DE; 1993-09-01), page 86
  6. Sega Force, "January 1993" (UK; 1992-12-10), page 47
  7. Sega Power, "September 1992" (UK; 1992-08-06), page 24
  8. 8.0 8.1 Sega Magazin, "September/Oktober 1993" (DE; 1993-09-01), page 87
  9. 9.0 9.1 9.2 GamePro, "December 1992" (US; 1992-xx-xx), page 169
  10. GamesMaster, "January 1993" (UK; 1992-12-03), page 14
  11. 11.0 11.1 Sega Force, "February 1993" (UK; 1993-01-14), page 80
  12. 12.0 12.1 Computer & Video Games, "March 1993 (Go! Issue 17)" (UK; 1993-02-15), page 6
  13. Computer & Video Games, "October 1992" (UK; 1992-09-15), page 26-27 (26)
  14. Console Mania, "Novembre 1992" (IT; 1992-xx-xx), page 44-47/49 (44)
  15. Mean Machines: The Essential Sega Guide, "" (UK; 1993-11-18), page 18
  16. GameFan, "Volume 1, Issue 1: October 1992" (US; 1992-xx-xx), page 6/20-21 (6)
  17. GamePro, "October 1992" (US; 1992-xx-xx), page 46-47 (48)
  18. Hobby Consolas, "Octubre 1992" (ES; 1992-xx-xx), page 74-77 (74)
  19. Joystick, "Novembre 1992" (FR; 1992-1x-xx), page 145
  20. Sega Mega Drive Advanced Gaming, "November 1992" (UK; 1992-xx-xx), page 32-33 (32)
  21. Mega, "January 1994" (UK; 1993-12-16), page 86-87 (86)
  22. Mean Machines, "September 1992" (UK; 1992-08-27), page 16-18 (16)
  23. Player One, "Octobre 1992" (FR; 1992-10-10), page 72-73 (72)
  24. Sega Force, "1/93" (SE; 1993-01-14), page 10-11 (10)
  25. Sega Force, "September 1992" (UK; 1992-08-13), page 68-69 (68)
  26. Hobby Consolas, "Octubre 1992" (ES; 1992-xx-xx), page 78-79 (78)
  27. Player One, "Décembre 1992" (FR; 1992-12-10), page 132 (128)
  28. Sega Force, "2/93" (SE; 1993-03-18), page 20
  29. Sega Force, "January 1993" (UK; 1992-12-10), page 46-47 (46)
  30. Consoles +, "Février 1993" (FR; 1993-0x-xx), page 118
  31. Electronic Gaming Monthly, "December 1992" (US; 1992-xx-xx), page 38
  32. Mean Machines: The Essential Sega Guide, "" (UK; 1993-11-18), page 164
  33. GamesMaster, "April 1993" (UK; 1993-03-18), page 80
  34. Joypad, "Février 1993" (FR; 1993-0x-xx), page 112
  35. Joystick, "Février 1993" (FR; 1993-0x-xx), page 185
  36. Micromanía (segunda época), "Marzo 1993" (ES; 1993-0x-xx), page 50
  37. Mean Machines Sega, "February 1993" (UK; 1993-01-28), page 80
  38. Player One, "Février/Mars 1993" (FR; 1993-02-10), page 94
  39. Sega Pro, "February 1993" (UK; 1993-01-14), page 44
  40. Sega Pro, "April 1993" (UK; 1993-03-11), page 74
  41. Sega Zone, "February 1993" (UK; 1993-01-20), page 1

Alien 3
Alien 3 MD Title.png

Main page | Comparisons | Maps | Hidden content | Magazine articles | Reception | Promotional material | Region coding

Alien and Predator games for Sega systems/published by Sega
Sega Mega Drive
Alien 3 (1992) | Predator 2 (1992) | Operation: Aliens (unreleased)
Sega Master System
Alien 3 (1992) | Predator 2 (1992)
Sega Game Gear
Alien 3 (1992) | Predator 2 (1992)
Alien 3: The Gun (1993)
Sega Saturn
Alien Trilogy (1996) | Aliens vs. Predator (unreleased) | Alien: Resurrection (unreleased)
Xbox 360
Sony PlayStation 3
Windows PC
Aliens: Crucible (unreleased) | Aliens vs. Predator (2010) | Aliens: Colonial Marines (2013) | Alien: Isolation (2014)
Nintendo DS
Aliens: Infestation (2011)
Nintendo Wii U
Aliens: Colonial Marines (unreleased)
Xbox One
Sony PlayStation 4
Alien: Isolation (2014)
Nintendo Switch
Alien: Isolation (2019)
Sampler Discs
Sega Saturn
Alien Trilogy Taikenban (199x) | Preview Sega Saturn Vol. 1 (199x)
Alien and Predator related media
Aliens: Colonial Marines Original Soundtrack Recording (2013)
Aliens vs. Predator Official Strategy Guide (2010) | Aliens: Colonial Marines (2012) | Aliens: Colonial Marines Official Strategy Guide (2013) | Alien Isolation (2014)