All retail Xbox One games enjoy simultaneous downloadable releases, allowing gamers to choose between physical or digital copies of their favorite games. On Xbox 360 though, "Games on Demand" downloadable releases are far from ubiquitous and often arrive several months after the same games launch at retail. Even less common, sometimes an Xbox 360 game that originated at retail in one territory gets released solely as a Games on Demand title in others. Think Resident Evil Revelations or Deathsmiles II, both exclusively downloadable titles in America. Now we can add another to that list, because Japanese developer G.Rev's Xbox 360 shoot-em-up (shmup) Under Defeat HD has finally made its way to America via Games on Demand for $19.99. Find out whether Under Defeat HD was worth the wait in our review with exclusive game play video and screenshots!