Summary: I'd never played the original, but this game is well worth the price for anyone who loves classic shmups. The inclusion of the original Arcade layout along with the new 16:9 mode is really nice. The overall difficulty curve combined with the number of continues you get worked well for me to force me to improve while still being a challenge. Great game! I love having this on disc: it also came with a soundtrack CD.
Summary: This game is awesome. There are plenty of reviews out there, so I'm going to speak to only one part in particular: Is this game worth the price? The answer, is yes. Also, if you have any interest in two-player co-op experiences (which I do), this game is awesome for it. You really can have fun with a couple of people playing this in New-World-Order Mode, strafing in unison and flanking one another's enemies. Very fun game.
Summary: Under Defeat HD is not perfect. Visually it feels somewhat bland, and suffers from looking like a Dreamcast game only in HD. It's simple, the game is short (especially after running through enough times to memorizing it), and unforgiving to beginners. It's weapon system is not particularly complex when compared to other classic shmups. So why do I give the game 5 stars? Under Defeat is what it is, and it's not ashamed by it whatsoever.
Summary: You are a fan of Shmups if you are reading this. Besides the obvious benefits that come with purchasing Under Defeat, you will receive hidden benefits. This originally came as a posthumous Dreamcast game. If you understand any of this, then you should feel blessed to have this gem available on a current system. I'll take it! If you DON'T buy this, you are condemning the possibility of future releases of this nature.
Summary: I enjoyed under defeat hd on ps3 from dreamcast and arcade. I remember history of video games and magazine. I know under defeat never release on dreamcast in america. I know under defeat release on dreamcast in japan.