yeah they were GD roms, although you could compress and port games to 700 mb cd-roms if you were pirating thief. You would suffer fmv and audio quality loss, but you could still play the game at 70% the data size. Lossless Real time decompression wasn't as possible back then, so there would be huge uncompressed videos eating CD space. The Wii could emulate Dreamcast, but theres no where to store the games on your system....well that is unless they make wiiware remakes where theres no fmvs and everything is ran in real time. Only 3 out of 10 games would have fmv quality you couldn't replicate in real time on the Wii. If thats not possible theres real time decompression, and or real time decompression + lowered video quality standards. It would just be easier to release a port, but few games need to be ported because they were already ported to Gamecube. Sega needs to get their **** together and release Shenmue games on Wii, I think as far as style of game Wii fans would appreciate it the most.