console; other launch games include F-Zero, Pilotwings (both of which demonstrate the console's Mode 7 pseudo-3D rendering), SimCity, and Gradius III. Console wars The rivalry between Nintendo and Sega was described as one of the most notable console wars in video game history, in which Sega positioned the Genesis as the "cool" console, with games aimed at older audiences, and aggressive advertisements that occasionally attacked the competition. Nintendo scored an early public-relations advantage by securing the first console conversion of Capcom's arcade hit Street Fighter II for Super NES, which took more than a year to make the transition to the Genesis. Though the Genesis had a two-year lead to launch time, a much larger library of games, and a lower price point, it only represented an estimated 60% of the American 16-bit console market in June 1992, and neither console could maintain a definitive lead for several years. Donkey Kong Country is said to have helped establish the Super NES's market prominence in the latter years of the 16-bit generation, and for a time, maintain against the PlayStation and Saturn. According to Nintendo, the company had sold more than 20 million Super NES units in the U.S. According to a 2014 Wedbush Securities report based on NPD sales data, the Super NES outsold the Genesis in the U.S. market by units. Changes in policy During the NES era, Nintendo maintained exclusive control over games released for the system – the company had to approve every game, each third-party developer could only release up to five games per year (but some third parties got around this by using different names, such as Konami's "Ultra Games" brand), those games could not be released on another console within two years, and Nintendo was the exclusive manufacturer and supplier of NES cartridges. Competition from Sega's console brought an end to this practice; in 1991, Acclaim Entertainment began releasing games for both platforms, with most of Nintendo's other licensees following suit over the next several years; Capcom (which licensed some games to Sega instead of producing them directly) and Square were the most notable holdouts. Nintendo continued to carefully review submitted games, scoring them on a 40-point scale and allocating marketing resources accordingly. Each region performed separate evaluations. Nintendo of America also maintained a policy that, among other things, limited the amount of violence in the games on its systems. The surprise arcade hit