The PC Engine was the first platform system to use CD roms as a storage medium. At first the system had a 64k cache for the CD games, but later with the introduction of Super CD Rom had 256k cache, which allowed for better animation in the cut scenes. Much of the music was CD quality and human speech was plentiful, thanks to the use of regular audio tracks. This gave it an edge over it's rivals, but in the U.S. precious few good games were brought to light. The vast majority of PC Engine treasures remained in Japan . . .