Dance Dance Revolution: Ultramix
Publisher: Konami
Developer: Konami Computer Entertainment Hawaii
Xbox.com Section: Yes
Players: 1 to 4 offline, 1 to 2 online, 1 to 4 system link
System Link: Yes
Online Multiplayer: Yes
Memory Unit: Yes*
HDTV: 480p
Voice: Yes
Custom Soundtracks: No
Communicator Headset: Yes
Friends: Yes
In-game Dolby Digital: Yes
Content DL: Yes**
Scoreboards: Yes
Guests: No
Hard Drive: 12,492 blocks
360 Backwards Compatible: No
Notes: DDR Ultramix supports the Dance Pad controller. This information has been verified as correct.
* During Edit Mode only.
** 6 pieces of downloadable content are available for $5.00 a piece.
Stretching to Widescreen: It looks fine either way, I guess it's the cell shading...
Screenshots:
HD Usage:
DDR Ultramix takes up a total of 12,492 blocks, or 195.2 megs roughly, on your Xbox's hard drive:

1. DDR Ultramix HDD Save Location - 5 blocks
2. Save Data - 44 blocks(less than 1 meg)
3. Downloadable Content: Song Pack 1 - 2003 blocks(31.3 megs)
4. Downloadable Content: Song Pack 2 - 2057 blocks(32.1 megs)
5. Downloadable Content: Song Pack 3 - 2069 Blocks(32.4 megs)
6. Downloadable Content: Song Pack 4 - 2272 Blocks(35.5 megs)
7. Downloadable Content: Song Pack 5 - 1985 Blocks(31.0 megs)
8. Downloadable Content: Song Pack 6 - 2057 Blocks(32.1 megs)