It’s being reported that the XBLA and PSN versions of Sonic Adventure do not venture out of its 4:3 aspect ratio.
Joystiq, reporting from the E3 show floor, said the game displays only in 4:3, with vertical bars surrounding the sides of a widescreen display.
Sega also confirmed to the site that it was unable to alter the code for Sonic Adventure.
The company’s’ other Dreamcast title, Crazy Taxi, will support full resolution, although the original soundtrack and the branded stores have been replaced with generic music and brands due to licensing issues.
Sonic Adventure and Crazy Taxi are due for release later this year.