Picked this up today. It's a Glorysun hack (!) of the Street Fighter II Turbo beta and the title screen christens it "Street Fighter III 18 Person". Typical lazy hack with minimal effort, resembles a lot of their earlier hack work.
The character select screen does have 18 selectable characters; they included the 4 characters from Super SFII along with Takuma and Chzhen (?). The headshots for the 4 from SSFII are taken from SSFII, Takuma is taken from the KoF '98 pirate and Chzhen is Guile from the '98 pirate.
When you actually play the game, all the new characters are just existing characters with palette swapped outfits. Chzhen is Ken, Takuma is Ryu, DJ is Balrog, Cammy is Chun Li, T. Hawk is E. Honda, and Fei Long is M. Bison. For some reason the initial VS screen is blacked out but the post-fight one is still present. The names under the lifebars are changed, but beyond that and the palette changes I really don't see anything.
And who the hell is Chzhen?