the best platform for IBM PC-compatible games before the VGA era. By 1988, the enormous popularity of the Nintendo Entertainment System had greatly affected the computer-game industry. A Koei executive claimed that "Nintendo's success has destroyed the [computer] software entertainment market". A Mindscape executive agreed, saying that "Unfortunately, its effect has been extremely negative. Without question, Nintendo's success has eroded software sales. There's been a much greater falling off of disk sales than anyone anticipated." A third attributed the end of growth in sales of the Commodore 64 to the console, and Trip Hawkins called Nintendo "the last hurrah of the 8-bit world". Experts were unsure whether it affected 16-bit computer games, but Hawkins, in 1990, nonetheless had to deny rumors that Electronic Arts would withdraw from computers and only produce console games. By 1993, ASCII Entertainment reported at a Software Publishers Association conference that the market for console games ($5.9 billion in revenue) was 12 times that of the computer-game market ($430 million). However, computer games did not disappear. By 1989, Computer Gaming World reported that "the industry is moving toward heavy use of VGA graphics". While some games were advertised with VGA support at the start of the year, they usually supported EGA graphics through VGA cards. By the end of 1989, however, most publishers moved to at supporting at least 320x200 MCGA, a subset of VGA. VGA gave the PC graphics that outmatched the Amiga. Increasing adoption of the computer mouse, driven partially by the success of adventure games such as the highly successful King's Quest series, and high resolution bitmap displays allowed the industry to include increasingly high-quality graphical interfaces in new releases. Further improvements to game artwork and audio were made possible with the introduction of FM synthesis sound. Yamaha began manufacturing FM synth boards for computers in the early-mid-1980s, and by 1985, the NEC and FM-7 computers had built-in FM sound. The first PC sound cards, such as AdLib's Music Synthesizer Card, soon appeared in 1987. These cards allowed IBM PC compatible computers to produce complex sounds using FM synthesis, where they had previously been limited to simple tones and beeps. However, the rise of the Creative Labs Sound Blaster card, released in 1989, which featured much higher sound quality due to the inclusion of a PCM channel and digital signal processor, led AdLib to file for bankruptcy by 1992. Also in 1989, the