if the player happened to find a system 655.36 to 670.36 light years away, it would be counted by the game as within the "15 light year" range. This would also happen for systems slightly beyond 1310.72 light years, 1966.08 light years, and other multiples of 655.36. With a bit of careful triangulation it was usually possible to get near or directly to a destination system any distance away by means of just two such "wormhole" jumps. The game features a selection of MIDI interpretations of classical music by composers such as Wagner, Mussorgsky and Grieg. Strauss’s The Blue Danube is played during any space station docking sequence, a homage to the film 2001: A Space Odyssey. Particularly, to make stronger futuristic impression, "The Great Gate of Kiev" and "In the Hall of the Mountain King" in the game are very close to electric organ interpretation by ELP. In addition to this, David Lowe provided two original classical-style pieces, one of which was for the intro sequence. The game has since been released as shareware and is available as a free download, although being a DOS game, users of post-Windows 98 operating systems may have difficulty getting it to run. Primarily this was because of the game using EMS type memory rather than XMS. The expanded memory manager EMM386 had to be configured to use it. Using emulation such as DosBox will get the official shareware version of the game to run on modern operating systems such as Windows 7, Windows XP, Mac OS X and Linux. Also, around 2005 Tom Morton reverse engineered a platform-neutral C version from the game, called GLFrontier, making the game natively and fast playable on modern OSes again. Reception Frontier was generally well received by the media. Most magazines were awestruck by its sheer scale and accurate depiction of real-world physics, and gave it high ratings. Computer Gaming World in April 1994 favorably discussed the game's "ENORMOUS universe" with "many, many hours of exploratory game play ... less of a game, and more a way of life". A longer review the next month reported that the game compensated for the Amiga version's 16-color palette with "a surprising amount of graphic detail". The magazine concluded that "Frontier should offer months, or even years, of galaxy-trekking fun" as players explored the "incredibly immense" universe. One notable exception was Amiga Power, who viewed the game not as