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''Ultima: Escape from Mt. Drash'' is a video game for Commodore VIC-20 home computer. ==Description and plot== In the game, creatures called "garrintrots" have imprisoned the player in Mt. Drash, and the player's task is to escape the dungeons. The game itself is a very simple series of three-dimensional randomly generated dungeons, and the idea is to destroy all monsters that stand in way and exit to the next level. There is a time limit as well. The game doesn't employ custom graphics, but rather uses the VIC-20's standard set of graphical characters to draw the game scene. The game was also notable for its soundtrack; using the 4-voice sound capabilities of the MOS Technology VIC video chip in the VIC-20 to provide background music. Very few games written for the VIC-20 featured such a background soundtrack that would become commonplace in games for the Commodore 64, Nintendo NES, etc. The source code was written in VIC-BASIC, with assembly language routines for faster animation of graphics and to handle the background music. Unlike most of the more popular VIC-20 games, it wasn't published as a ROM cartridge but rather on cassette tape. Due to the complexity of the source code and the unusual (by VIC-20 standards) length of the game, as well as the fact that unlike a cartridge game all of it had to fit in RAM, an 8k or 16k RAM memory expansion cartridge was required to be installed in the VIC-20 before running the game, further limiting the target audience. Copy protection consisted of the RUN-STOP and RESTORE keys on the VIC-20 keyboard being disabled (to prevent "breaking in" to the BASIC code), as well as the original cassette being recorded and mastered in a way which made duplicating on a dual-cassette deck troublesome. The game itself doesn't tie in to the ''Ultima'' series in too many ways. Both have a fantasy setting, Mt. Drash is the name of a dungeon in ''Ultima I'', and the name "garrintrots" is an obvious pun on Richard Garriot's surname; but there the similarity ends. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ultima: Escape from Mt. Drash」の詳細全文を読む スポンサード リンク
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