In early 1987, Square released 3-D WorldRunner, designed by Hironobu Sakaguchi and Nasir Gebelli.[16][17] Using a forward-scrolling effect similar to Sega's 1985 third-person rail shooter Space Harrier.[16] 3-D WorldRunner was an early forward-scrolling pseudo-3D third-person platform-action game where players were free to move in any forward-scrolling direction and could leap over obstacles and chasms. It was notable for being one of the first stereoscopic 3-D games.[17] Square released its sequel, JJ, later that year.[18]