term suggested there should only be four. BASIC Computer Games was the first million-selling computer book, giving Leedom's version a much wider audience than Mayfield and Ahl's original versions. Reception and legacy Star Trek, especially the Super Star Trek version, was immensely popular for the era. By 1975 it had spread to mainframes across the United States, and Ahl stated in 1978 in BASIC Computer Games that it was difficult to find a computer installation that did not contain a version of Star Trek. By 1980, Star Trek was described by Mark Herro in The Dragon magazine as "one of the most popular (if not the most popular) computer games around", with "literally scores of different versions of this game floating around". At least one published work of fiction that year mentioned the game, the short story "Another Game of Spacewar", published in an anthology by Creative Computing. A 2013 overview of the game and its myriad versions in The Register by Tony Smith concluded that "like most games of the period it was fun to play once or twice, but it lacked staying power." Regardless, for the players of the time period when it was released, it was "a shiny new gateway to 'strange new worlds'". The widespread popularity of the game, especially Super Star Trek, along with the availability of the source code, led to numerous ports of both versions of the game for mainframe and microcomputers. Alternate versions of the game were also produced, based on Star Trek, Super Star Trek, or both. David Matuszek and Paul Reynolds wrote an expanded Fortran version of the original game as UT Super Star Trek; Eric Allman ported this version to the C programming language to become BSD Trek, which is still included in the Debian classic Unix games package. BYTE published a BASIC version by David Price in March 1977 that used the original command system based on numbers. In 1983 BYTE columnist Jerry Pournelle claimed to have written "the world's most complex Star Trek game" in CBASIC. A shareware version for MS-DOS, EGATrek, was released in the late 1980s that replaced the original text-based screens with basic graphics that implemented a multi-paned display. In 2017, PC Gamer ranked EGATrek among the best Star Trek games. Multiple commercial versions of the game were released in addition to the free ports. Apple Inc. released a version for the Apple II+