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Index › 2000s › Under Defeat
Under Defeat cover art

Under Defeat

アンダーディフィート, AKA: Under Defeat HD
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Under Defeat

Nintendo eShop $19.99

Under Defeat is a shoot 'em up arcade game by G.rev. It was released for the Sega Dreamcast in March 2006. The game takes place in an alternate reality based on World War II, and, in a controversial twist, players control German-speaking characters (under the banner of "the Empire"), fighting against enemies ("the Union") that speak English and possess weapons patterned after those of both real-life Allied and Axis powers (for example, naval units in Level 2 bear heavy resemblance toward the Imperial Japanese warships). The game was released very late in the life of the Dreamcast, but sold much better than expected, probably because there were no other home ports planned in the foreseeable future. Players assume control of a helicopter, which can be rotated like a more limited version of the mechanism in Zero Gunner 2. Gameplay is largely very traditional, and bears a strong resemblance to some older Toaplan games, especially Twin Cobra. It uses 3D graphics, and a slightly angled perspective to give the game more depth than most other titles in the genre. On October 27, 2011, G.rev announced a remake titled Under Defeat HD to be released for the PlayStation 3 and Xbox 360.[1] The game is released by Rising Star Games on February 23, 2012 in Japan, November 9, 2012 in the UK and set to be released on November 28, 2012 in North America for PlayStation 3 only and January 25, 2013 in Europe. The Xbox 360 version for North America was released on August 26, 2014 as a downloadable game-only under Games on Demand. An upgraded version of Under Defeat HD (PS3, Xbox 360) was made on Sega Ring Edge 2 arcade System, named Under Defeat HD+. Now that version is coming to arcades with some improvements via Sega’s ALL.NET. Among the enhancements this will have is a horizontal orientation mode, more detail in the battlefield and a “New Order” mode where apparently you can choose from different types of aircraft.

Year
2005
Developer
G.rev
Orientation
Vertical

SCREENSHOTS

PHYSICAL

HISTORY

Under Defeat is a shoot 'em up video game developed by G.rev and released in Japanese arcades in 2005. The game takes place in an alternate reality during World War II, where players control German-speaking characters (dubbed "the Empire") fighting against English-speaking characters ("the Union"). Their vehicles are patterned after those of real-life Allied and Axis powers. A port for the Dreamcast was released in 2006 and marketed as the last game for the system, although two more were released the following year. The game was commercially successful, but received average reviews from critics because of its traditional and derivative gameplay.

A high-definition remaster, Under Defeat HD, was released for the PlayStation 3 and Xbox 360 in 2012, published by Rising Star Games. The updated version contains improved visuals, new control scheme options, and a new gameplay mode to adapt the game for 16:9 displays. This version was re-released in arcades as Under Defeat HD+. Another enhanced version by City Connection was released for Nintendo Switch, PlayStation 4, PlayStation 5 and Xbox Series X/S in 2024 in Japan, with Windows port and western release in 2025.

Gameplay

In Under Defeat, the player assumes control of a helicopter. The gameplay bears resemblance to early Toaplan games such as Twin Cobra. It uses 3D graphics, and a slightly angled perspective to give the game more depth than most other titles in the genre. The player's helicopter can move in eight directions, though its move speed is fixed in relation to the stage's scroll speed.

The player has 3 basic forms of attack: the machine gun, bombs, and options. The primary weapon is the machine gun, which can fire a continuous stream of bullets. Bombs unleash a screen-devastating blast, destroying most enemies instantly, and protects the player's ship from enemy fire. The player begins each life with three bombs and can accumulate up to six. Finally, the helicopter has three possible weapon assists, or "options", which provide extra firepower. The weapon options are a machine gun, cannon, and rocket grenade. Using the right one at any given time determines how tough certain battles and stages will be.

Development and release

Under Defeat was developed by G.rev for Sega's NAOMI arcade board. It was released in Japanese arcades on October 27, 2005, followed by a companion soundtrack release in December. A Dreamcast port was released on March 23, 2006, over five years after Sega announced they were pulling support for the system. G.rev promoted it as the last Dreamcast game, although Triggerheart Exelica and Karous were released for the system the following year. G.rev credited the promotion as helping its commercial success. It sold through its first printing within one week, becoming the best-selling game on the system since G.rev's own Border Down (2003). Dreamcast copies were released in limited numbers and continue to command high prices on secondary markets.

The music was composed by Shinji Hosoe, and has been described as jazz fusion. He was asked to compose music with a melancholic feel to correlate with the game's storyline, which made him emotional. A limited-edition version with a pack-in soundtrack CD was also released (different from the soundtrack released earlier).

Under Defeat HD

In response to fan requests for a re-release, G.rev announced a high-definition version of Under Defeat for PlayStation 3 and Xbox 360 in October 2011. The re-release was titled Under Defeat HD published by Rising Star Games. Most of G.rev's recent games were Xbox 360 exclusives, so out of fear of being framed exclusively as Xbox 360 developers in the industry, they decided to create a PlayStation 3 port as well. In addition to digital storefronts, G.rev produced physical copies as a show of gratitude to their fans. An arcade version was released in 2013 as Under Defeat HD+.

Building on the original, Under Defeat HD has a new gameplay mode, New Order mode, which stretches the gameplay to fill a 16:9 display and gives the player the ability to shoot at wider ranges. G.rev developed this mode in an effort to adapt the game for modern 16:9 displays. A new optional dual stick control setup was added as well. Under Defeat HD also has improved shadowing and textures. Because the textures were originally created in high resolution, the team used those to replace the lossy versions used in the original though some pixel art needed to be tediously enlarged. The team also needed to manually reproduce the deferred background polygon rendering, a process handled by PowerVR technology in the original arcade and Dreamcast hardware. The New Order mode also features a new soundtrack by SuperSweep composer Yousuke Yasui, who also scored G.rev's Mamorukun Curse!.

In April 2024, City Connection announced that it will release an updated version of Under Defeat HD for the PlayStation 5, Xbox, Nintendo Switch and PC. It features new music composed by original composer Shinji Hosoe, as well as contribution, rank and communications subtitles displays, and other features. In Japan, the game was released for the Nintendo Switch, PlayStation 4, PlayStation 5, and Xbox Series X/S on December 5, 2024. Clear River Games planned to publish the game in the west and for Windows via Steam on the same date, but later delayed the release until February 6, 2025.

Reception

Reviewing the Dreamcast version, Edge and Eurogamer agreed that Under Defeat was traditional in its gameplay, absent of the more inventive bullet patterns, scoring methods, and controls seen in modern shooters. Edge wrote that it although it lacks the excitement of other shooters, it makes up for it through rewarding dedicated players. Eurogamer described it as "'80s gaming dressed in '00s visuals running on '90s hardware" and recommended it for shooter aficionados. They also argued that the scarcity of good shoot 'em ups may influence fans of the genre to overstate Under Defeat's quality. They concluded their thoughts by calling it "sweet and eloquent but, [...] also tired and relentlessly derivative. Whether that annoys you or not depends on whether you were looking simply some well-made twitch fun or a glorious resurrection." Both publications praised the graphics, particularly the explosions and smoke effects. In a retrospective review, Retro Gamer praised the game's particle effects and wrote that Under Defeat "shows how, with good developers, the Dreamcast was perfectly capable of hanging with the competition."

Critics reviewing the high-definition version primarily recommended the game for fans of the shooter genre. Push Square wrote that its longevity was mostly in beating high scores, for better or worse. GameRevolution called it "a game trapped in time" for its traditional feel, but felt the game's unique controls will give satisfying nuance for shooter fans. Destructoid wrote that "getting used to Under Defeat’s controls is both the game's blessing and curse", believing that perhaps the game was developed for arcade sticks and a standard controller was not ideal. Critics overall praised the graphical improvements.

1CC RUNS

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

Show all 17 runs

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.

PRICE HISTORY

Every price change we know of, per shop. Flat means the price held; PC shops reach back through IsThereAnyDeal's archive, console shops start when this site started watching.

$0$10$20Nintendo eShop $19.99

Nintendo eShop low: $6.99 (1 Sep 2026)

SCORES

Source
Audience
Score
Reviews
Critics
70 / 100
1
Users
8 / 10
7

ACHIEVEMENTS 1 set

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.

Dreamcast 50 achievements, 625 pts
  1. Rookie: Bridgehead 1
    Start the 1st loop and complete Stage 1-1.
  2. Rookie: Battleship 2
    Start the 1st loop and complete Stage 1-2.
  3. Rookie: Front Line 3
    Start the 1st loop and complete Stage 1-3.
  4. Rookie: Fortress 4
    Start the 1st loop and complete Stage 1-4.
  5. Rookie: Graveyard 5
    Start the 1st loop and complete Stage 1-5.
  6. Mission: Bridgehead 3
    Start the 1st loop and complete Stage 1-1 dying 15 times or less.
  7. Mission: Battleship 3
    Start the 1st loop and complete Stage 1-2 dying 15 times or less.
  8. Mission: Front Line 5
    Start the 1st loop and complete Stage 1-3 dying 15 times or less.
  9. Mission: Fortress 5
    Start the 1st loop and complete Stage 1-4 dying 15 times or less.
  10. Mission: Graveyard 10
    Start the 1st loop and complete Stage 1-5 dying 15 times or less.
  11. Mission: Another Bridgehead 3
    Start the 2nd loop and complete Stage 2-1 dying 15 times or less.
  12. Mission: Another Battleship 3
    Start the 2nd loop and complete Stage 2-2 dying 15 times or less.
  13. Mission: Another Front Line 5
    Start the 2nd loop and complete Stage 2-3 dying 15 times or less.
  14. Mission: Another Fortress 5
    Start the 2nd loop and complete Stage 2-4 dying 15 times or less.
  15. Mission: Another Graveyard 10
    Start the 2nd loop and complete Stage 2-5 dying 15 times or less.
  16. Operation: Twin Tiger 25
    Start the 1st loop and complete Stage 1-5 dying 3 times or less.
  17. Operation: Twin Cobra 25
    Start the 2nd loop and complete Stage 2-5 dying 3 times or less.
  18. Operation: Metal Black 50
    Start the 1st loop and complete Stage 1-5 dying 3 times or less, on Hard.
  19. Operation: Border Down 50
    Start the 2nd loop and complete Stage 2-5 dying 3 times or less, on Hard.
  20. Operation: Above Defeat 50
    Start the 1st loop and complete Stage 2-5 in the same game dying 15 times or less (>95% average contribution to advance loop).
  21. Target: Aerial Heavy Tank ''Winchester'' 5
    Defeat the boss in 1-1 with >25 seconds left. No deaths or bombs allowed.
  22. Target: Mauser-class Battleship ''Bordeaux'' 5
    Defeat the boss in 1-2 with >25 seconds left. No deaths or bombs allowed.
  23. Target: New-Type Aerial Heavy Tank ''Springfield'' 10
    Defeat the boss in 1-3 with >40 seconds left. No deaths or bombs allowed.
  24. Target: Assault Control Tower 10
    Defeat the boss in 1-4 with >40 seconds left. No deaths or bombs allowed.
  25. Target: Self-Propelled Fortress ''Braun'' 25
    Defeat the boss in 1-5 with >25 seconds left. No deaths or bombs allowed.
  26. Target: Aerial Heavy Tank ''Winchester'' mk.II 5
    Defeat the boss in 2-1 with >25 seconds left. No deaths or bombs allowed.
  27. Target: Mauser-class Battleship ''Bordeaux'' mk.II 5
    Defeat the boss in 2-2 with >25 seconds left. No deaths or bombs allowed.
  28. Target: New-Type Aerial Heavy Tank ''Springfield'' mk.II 10
    Defeat the boss in 2-3 with >40 seconds left. No deaths or bombs allowed.
  29. Target: Assault Control Tower mk.II 10
    Defeat the boss in 2-4 with >40 seconds left. No deaths or bombs allowed.
  30. Target: Self-Propelled Fortress ''Braun'' mk.II 25
    Defeat the boss in 2-5 with >25 seconds left. No deaths or bombs allowed.
  31. Ace: Bridgehead 5
    From the start of 1-1, reach the boss without dying or using bombs.
  32. Ace: Battleship 10
    From the start of 1-2, reach the boss without dying or using bombs.
  33. Ace: Front Line 10
    From the start of 1-3, reach the boss without dying or using bombs.
  34. Ace: Fortress 25
    From the start of 1-4, reach the boss without dying or using bombs.
  35. Ace: Graveyard 25
    From the start of 1-5, reach the boss without dying or using bombs.
  36. Ace: Bridgehead Again 5
    From the start of 2-1, reach the boss without dying or using bombs.
  37. Ace: Battleship Again 10
    From the start of 2-2, reach the boss without dying or using bombs.
  38. Ace: Front Line Again 10
    From the start of 2-3, reach the boss without dying or using bombs.
  39. Ace: Fortress Again 25
    From the start of 2-4, reach the boss without dying or using bombs.
  40. Ace: Graveyard Again 25
    From the start of 2-5, reach the boss without dying or using bombs.
  41. Gunner: Vulcan Expert 5
    Deploy 20 Vulcan options in a single life.
  42. Gunner: Cannon Expert 5
    Deploy 20 Cannon options in a single life.
  43. Gunner: Rocket Expert 10
    Deploy 20 Rocket options in a single life.
  44. Score: Bronze Medal 3
    Start the 1st loop and reach 100k points before using a continue.
  45. Score: Silver Medal 10
    Start the 1st loop and reach 300k points before using a continue.
  46. Score: Gold Medal 25
    Start the 1st loop and reach 500k points before using a continue.
  47. Score: Great Bronze Medal 4
    Start the 2nd loop and reach 100k points before using a continue.
  48. Score: Great Silver Medal 10
    Start the 2nd loop and reach 300k points before using a continue.
  49. Score: Great Gold Medal 25
    Start the 2nd loop and reach 500k points before using a continue.
  50. Honorable Discharge 1
    Enter the menu screen, after unlocking Free Play.

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

RELEASES 9 systems

System
Platform
Year
Notes
ARC
Arcade
2005
Original release
DC
Dreamcast
2006
X360
Xbox 360
2012
PS3
PlayStation 3
2012
PS4
PlayStation 4
2024
NSW
Nintendo Switch
2024
PS5
PlayStation 5
2024
XSX
Xbox Series X|S
2024
PC
Windows
2025

PHYSICAL RELEASES 1 box

Under Defeat box art, Dreamcast
DC Dreamcast

GAME DATA

Orientation
Vertical
Series
Under Defeat
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