Stardock today announced that the PC version of Street Fighter IV, the latest iteration of the genre-establishing fighting game series, is now available via the Impulse digital distribution platform. Street Fighter IV features the return of four classic "World Warriors": Ryu, Ken, Chun-Li and Dhalsim. The characters and environments are rendered in stylized 3D computer graphics (CG), while the game is played in the classic Street Fighter 2D perspective with additional 3D camera flourishes.