prominent game franchises originated on the NES, including Nintendo's own Super Mario Bros., The Legend of Zelda and Metroid, Capcom's Mega Man franchise, Konami's Castlevania franchise, Square's Final Fantasy, and Enix's Dragon Quest franchises. Following the release of the Famicom / Nintendo Entertainment System, the global video game industry began recovering, with annual sales exceeding $2.3 billion by 1988, with 70% of the market dominated by Nintendo. In 1986 Nintendo president Hiroshi Yamauchi noted that "Atari collapsed because they gave too much freedom to third-party developers and the market was swamped with rubbish games". In response, Nintendo limited the number of titles that third-party developers could release for their system each year, and promoted its "Seal of Quality", which it allowed to be used on games and peripherals by publishers that met Nintendo's quality standards. Japan's first personal computers for gaming soon appeared, the Sord M200 in 1977 and Sharp MZ-80K in 1978. In Japan, both consoles and computers became major industries, with the console market dominated by Nintendo and the computer market dominated by NEC's PC-88 (1981) and PC-98 (1982). A key difference between Western and Japanese computers at the time was the display resolution, with Japanese systems using a higher resolution of 640x400 to accommodate Japanese text which in turn affected video game design and allowed more detailed graphics. Japanese computers were also using Yamaha's FM synth sound boards from the early 1980s. During the 16-bit era, the PC-98, Sharp X68000 and FM Towns became popular in Japan. The X68000 and FM Towns were capable of producing near arcade-quality hardware sprite graphics and sound quality when they first released in the mid-to-late 1980s. The Wizardry series (translated by ASCII Entertainment) became popular and influential in Japan, even more so than at home. Japanese developers created the action RPG subgenre in the early 1980s, combining RPG elements with arcade-style action and action-adventure elements. The trend of combining role-playing elements with arcade-style action mechanics was popularized by The Tower of Druaga, an arcade game released by Namco in June 1984. While the RPG elements in Druaga were very subtle, its success in Japan inspired the near-simultaneous development of three early action role-playing games, combining Druagas real-time hack-and-slash gameplay with stronger RPG mechanics, all released in late 1984: Dragon Slayer, Courageous Perseus, and Hydlide. A rivalry developed between the three games, with Dragon Slayer and Hydlide continuing their rivalry through subsequent