Under Defeat

Under Defeat
Developer(s)G.rev
Publisher(s)Sega (Arcade)
G.rev (Dreamcast)
Director(s)Hideyuki Kato
Designer(s)Masakazu Takeda
Programmer(s)Masakazu Takeda
Artist(s)Nanashiki Yamamoto
Composer(s)Shinji Hosoe
Yousuke Yasui (HD)
Platform(s)
Release
October 27, 2005
  • Arcade
    • JP: October 27, 2005
    Dreamcast
    • JP: March 23, 2006
    PS3, Xbox 360
    • JP: February 23, 2012
    • EU: November 9, 2012
    • NA: November 28, 2012 (PS3)
    • NA: August 25, 2014 (X360)
    NS, PS4, PS5, Series X/S
    • JP: December 5, 2024
    • WW: February 6, 2025
    Windows
    • WW: February 6, 2025
Genre(s)Shoot 'em up
Mode(s)Single-player, multiplayer
Arcade systemSega NAOMI

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.