Apple II and Atari 8-bit family versions of the game. Later production runs of the game featured a much smaller box and a lighter weight map. Despite reservations of Richard Garriott and Chuck Bueche, the original Apple II version of the game was copy-protected using Sierra's new Spiradisc system. The original Apple Ultima II received an audiovisual upgrade in 1989, bringing its graphics up to date with more recent games in the series much as was done with Ultima I. This "enhanced" version was only available as part of the Ultima Trilogy I-II-III box set released that year and discontinued only months later. (The Commodore and IBM versions of the Ultima Trilogy include the original, unenhanced versions of the game for their respective platforms.) The game was re-released several times later in CD-ROM PC compilations, including 1998's Ultima Collection. All these re-releases are missing necessary map files for most planets other than Earth; however, the map for "Planet X" is intact and the game is still winnable. Modern (too fast) computers also generate a divide by zero error when attempting to run the game. These issues are addressed with fan patches created by Voyager Dragon, a fan of the series, and are available on his website The Exodus Project. The game is known to run without errors and at an acceptable speed in a DOSBox environment, provided the missing map files are present. Ultima II was the first game in the series officially ported to platforms other than the Apple II. Ports Atari 8-bit The Atari 8-bit version was released in late 1983, several months after the Apple original. It requires an Atari 800 and an 810 disk drive. The game is mostly a direct port from the Apple II using the computer's high resolution graphics (which works in a similar manner to the Apple II's HGR mode) but does not otherwise take advantage of the Atari's advanced features. Commodore 64 The C64 port was apparently released before the programmer (credited only as "Bobbit") could finish. As a consequence, it is missing some gameplay elements and also has a simplified title screen with text characters instead of the dragon graphic on other versions. IBM PC compatibles The IBM PC version of Ultima II runs under MS-DOS compatible operating systems and supports only the Color Graphics Adapter and PC speaker sound. It uses the CPU for timing, and it will run