of playing digital audio. Some songs in the AdLib soundtrack were arrangements of those in the Sound Blaster soundtrack, while others are completely different songs altogether., A third, separately downloadable soundtrack was available for owners of the Gravis Ultrasound sound card featuring high quality music. Like the AdLib soundtrack, some of the Ultrasound's tracks were completely different songs, whereas others were arrangements of songs found in the AdLib or Sound Blaster versions. The reason for the separate "GUS" music download was due to the size of the Gravis music: as it was nearly as large as the original game, users who only had a Sound Blaster or AdLib didn't have to waste time downloading music they would never hear. Disc versions of the game included all three, as players did not need to download the game. Release Zone 66 was released primarily as shareware, on floppy disks, and CD-ROM. The first mission was released and distributed as shareware by GT Software. B&N Software released the first four missions of the game via floppy disk; Missions 1 and 2 were released together on one floppy disk, as were Missions 3 and 4. Epic MegaGames released all of the first four missions on two floppy disks. Finally, all eight missions were released on CD-ROM. Reception Computer Gaming World in 1993 recommended Zone 66 to "joystick jockeys", but stated that "occasional thumb twitchers may find the action a bit much to bear, as this title is quite intense". References External links 1993 video games Demoscene software Multidirectional shooters Assembly language software Video games about revenge Video games about terrorism Video games set in the 22nd century Video games set in Egypt Video games set in Iran Video games set in Italy Video games developed in the United States