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Index › 1980s › Alpha Mission
Alpha Mission cover art

Alpha Mission

ASO, AKA: ASO: Armored Scrum Object, Arian Mission, ASO - Armored Scrum Object
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Alpha Mission

Nintendo eShop $7.99

Alpha Mission is a vertical scrolling shooter that has similarities to Xevious, with the use of air-to-air and air-to-ground weapons.

Year
1985
Developer
SNK
Publisher
Namco
Orientation
Vertical

SCREENSHOTS

PHYSICAL

HISTORY

Alpha Mission, known as ASO: Armored Scrum Object in Japan, is a 1985 vertically scrolling shooter video game developed and published by SNK for Japanese arcades; it was released by Tradewest in North America. It was later ported to the Famicom in 1986 and released for the Nintendo Entertainment System in 1987.

The arcade game was a commercial success in Japan, where it was the seventh highest-grossing table arcade game of 1986. A sequel, Alpha Mission II, was released for the Neo Geo arcade system in 1991.

Gameplay

Alpha Mission is a one-player scrolling shooter game in its segregation of air-to-air and air-to-ground weapons. Missiles are used to destroy ground enemies, while laser-like weapons are used for aerial opponents. Throughout each of the levels, the player must fight off waves of enemies that threaten several space stations and a boss must be defeated at the end of each. Like most early games in this genre, when the player dies, all weapons are lost and the player is moved to a point slightly before the point of death. The player's craft can also be upgraded to have more powerful weapons by picking up various power-ups throughout the level.

Plot

The seven stars from the Tetranova galaxy have been in a fierce war between themselves for a very long time, a war which only served to lay waste to their homes. In the end, their homes were completely destroyed and all of their natural resources exausted, so they stopped the fighting and formed the Seven Star Alliance, with the objective of seeking a new home where they can rebuild their strength to continue waging war. Around the year 2300, the Seven Star Alliance's fleet finally reaches the Solar System, as they choose Earth to be their new home. They decide to attack Earth and destroy the human Race so they can conquer the planet. In response, Earth sends the SYD fighters to stop the invasion. The war between Earth's forces and the Seven Star Alliance would go on for 200 years, in 2515 The Player Character Came into Picture and Must End the War

Release

Alpha Mission was released on the PlayStation Portable as part of PSP Minis via PlayStation Store in 2011. Alpha Mission was also released on the Nintendo Switch in the Nintendo eShop on October 25, 2018 and on the PlayStation 4 via PlayStation Store on July 18, 2019 by Hamster Corporation as part of their Arcade Archives series. The game is also included on SNK 40th Anniversary Collection, containing both the original arcade and the NES version. It includes both the Japanese version and the Western/international version.

Reception

In Japan, Game Machine listed ASO as the second most successful table arcade cabinet of November 1985. The magazine later listed it as Japan's fifth highest-grossing table arcade game during the first half of 1986, and the seventh overall highest-grossing table arcade game of 1986.

STORY

Alpha Mission's storyline is very primitive, as the game was originally designed for Arcade use. The player moves from level to level, fighting off waves of enemies that threaten several different space stations. A boss must be defeated at the end of each level in order for the player to progress to the next level. Power-ups, upgrades, and new weapons can be collected during gameplay, but are all lost when the player dies.

1CC RUNS

One-credit clears we point to as the benchmark for this game.

GAMEPLAY VIDEO

STORES

Store
Price
Discount
Lowest ever

Prices are cached from each storefront and may be out of date. Last checked 24 Sept 2026.

SCORES

Source
Audience
Score
Reviews
Users
5 / 10
25
Users
70 / 100
17

ACHIEVEMENTS 2 sets

Tracked by RetroAchievements and earned in an emulator that reports to it. A game tracked on more than one machine gets a set for each, because they are different lists earned on different hardware.

Arcade 43 achievements, 378 pts
  1. Area 1 Clear 5
    Defeat the Hektaterian
  2. Excellent Mission 10
    Defeat the Hektaterian without losing a SYD combat ship
  3. Area 2 Dominated 5
    Defeat the Hanomaszui
  4. Perfect Mission 10
    Defeat the Hanomaszui without losing a SYD combat ship
  5. Area 3 Destroyed 5
    Defeat the Shariputra
  6. Fantastic Mission 10
    Defeat the Shariputra without losing a SYD combat ship
  7. Area 4 Finished 5
    Defeat the Bonbonera
  8. Honored Mission 10
    Defeat the Bonbonera without losing a SYD combat ship
  9. Area 5 Devastated 5
    Defeat the Gigabyte
  10. Magnificent Mission 10
    Defeat the Gigabyte without losing a SYD combat ship
  11. Area 6 Defeated 5
    Defeat the Jojozeze
  12. Extraordinary Mission 10
    Defeat the Jojozeze without losing a SYD combat ship
  13. Area 7 Sprayed 5
    Defeat the Mechapuku
  14. Fabulous Mission 10
    Defeat the Mechapuku without losing a SYD combat ship
  15. Area 8 Burnt 5
    Defeat the Soreniazui
  16. Miraculous Mission 10
    Defeat the Soreniazui without losing a SYD combat ship
  17. Area 9 in Ashes 5
    Defeat the Shariputra ll
  18. Fair Mission 10
    Defeat the Shariputra ll without losing a SYD combat ship
  19. Area 10 Crossed 5
    Defeat the Bonbonera ll
  20. Exemplary Mission 10
    Defeat the Bonbonera ll without losing a SYD combat ship
  21. Area 11 Protected 5
    Defeat the Terabyte
  22. Stealth Mission 10
    Defeat the Terabyte without losing a SYD combat ship
  23. Area 12 Bombed 5
    Defeat the Jojozeze ll
  24. Mission Accomplished 10
    Defeat the Jojozeze ll without losing a SYD combat ship
  25. Powerful Fighter Ship 3
    Increase every combat arsenal to maximum power
  26. Ready and Stocked 4
    Increase the energy bar to level 20
  27. Saving Energy 2
    Disarm a SYD fighter ship before it runs out of energy
  28. In Builder 2
    Build at least one spaceship of any type by joining 3 parts
  29. In Advance 3
    Complete an area after getting a letter W
  30. Don't Give Up 25
    Complete an area after getting a letter R
  31. Maximum Load 5
    Recharge energy to maximum level
  32. Increasing the Fleet 5
    Beat the default high score
  33. Alpha Mission Completed 25
    Finish the Game
  34. Eight Birds With One Stone 2
    Pilot a SYD Octo Fighter Ship
  35. Protection Is Never Too Much 2
    Pilot a SYD Seald Fighter Ship
  36. Shoot Quickly and Win 3
    Pilot a SYD Cannon Fighter Ship
  37. Requesting Missiles 3
    Pilot a SYD Homing Fighter Ship
  38. Now It's My Turn 3
    Pilot a SYD Paralyzer Fighter Ship
  39. Succumbed by Bombs 3
    Pilot a SYD Nuclear Fighter Ship
  40. Fire Against Fire 3
    Pilot a SYD Fire Fighter Ship
  41. Ravager 5
    Pilot a SYD Thunder Fighter Ship
  42. Destroyer Arsenal 50
    Assemble and own all power armor ships without using them
  43. Alpha Mission Completed Excellently 50
    Finish the game without using continues

Achievement names, descriptions and badges are the work of the RetroAchievements community. View this set on RetroAchievements

NES/Famicom 24 achievements, 205 pts
  1. Hektaterian 10
    Beat Area 1!
  2. Hanomaszui 10
    Beat Area 2!
  3. Shariputra 10
    Beat Area 3!
  4. Bonbonera 10
    Beat Area 4!
  5. Koros Ammon 10
    Beat Area 5!
  6. Novo Folfu 10
    Beat Area 6!
  7. Hektaterian Returns 10
    Beat Area 7!
  8. Hanomaszui Returns 10
    Beat Area 8!
  9. Shariputra Returns 10
    Beat Area 9!
  10. Bonbonera Returns 10
    Beat Area 10!
  11. Yakuuto Varis 10
    Beat Area 11!
  12. Tagami Metta 25
    Beat Area 12!
  13. OCTO 5
    Equip the Octo Ship!
  14. SHEELD 5
    Equip the Sheeld Ship!
  15. CANON 5
    Equip the Canon Ship!
  16. HOMMNG 5
    Equip the Homing Ship!
  17. PARALYZER 5
    Equip the Paralyzer Ship!
  18. NUCLEAR 5
    Equip the Nuclear Ship!
  19. FIRE 5
    Equip the Fire Ship!
  20. THUNDER 5
    Equip the Thunder Ship!
  21. ALIVE 5
    Accumulate 4 lives!
  22. FULL LIVES 5
    Accumulate 5 lives!
  23. 100K 10
    Get 100.000 points!
  24. 200K 10
    Get 200.000 points!

Achievement names, descriptions and badges are the work of the RetroAchievements community. View this set on RetroAchievements

RELEASES 6 systems

System
Platform
Year
Notes
ARC
Arcade
1985
Original release
NES
Nintendo Entertainment System
1987
PS3
PlayStation 3
2011
PSP
PlayStation Portable
2011
PS4
PlayStation 4
2018
NSW
Nintendo Switch
2018

GAME DATA

Orientation
Vertical
Series
Alpha Mission

SOURCES

Wikipedia, CC BY-SA 4.0
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