called Apple Trek in 1979, and Atari, Inc. released a version for the Atari 2600 as Stellar Track in 1980. The TRS-80 had at least three separate commercially available Star Trek games, including Trek-80 by Processor Technology (later retitled Invasion Force) which added more interactivity and a number of new options incorporated from the unrelated Trek73, a second Trek-80 by Judges Guild, and Startrek 3.5 from Adventure International. Acornsoft released a version titled Galaxy for their computer systems, and Tandy Computers released Space Trek for theirs. Yet another version was written in BASICA for the IBM Personal Computer in 1982, Video Trek 88; written by Windmill Software, it used numbers for most commands, like the earlier BYTE version. Apex Software released TI-Trek for the TI-99/4A in 1983, which incorporates speech if the speech synthesizer is present. 1984's Star Fleet I: The War Begins by Interstel was a variant released commercially for several computer systems. This game was successful enough to spawn a series. Numerous hobby projects have continued to port the original game versions and enhanced variants to other languages and systems through to today. Additionally, some commercial games have been inspired by Star Trek, such as Star Raiders (1979), which was initially designed as a real time, 3D version of the game. As late as 1994, the collective Star Trek variants were still popular enough that Computer Gaming World claimed that the otherwise unrelated Stellar Explorers gameplay was directly based on it, and that "anyone who remembers the old Trek games[...] will know exactly what this game is all about". See also List of Star Trek games References Sources External links HP 2000C BASIC source code for Mike Mayfield's STTR1 version Playable version of Super Star Trek Playable version of Super Star Trek with audio effects Ports of Super Star Trek in C , JavaScript, Pascal, Seed7, and Clojure Playable version of the Star Trek 3.5 TRS-80 port 1971 video games Games based on Star Trek Mainframe games Public-domain software with source code Science fiction video games Starship simulators based on Star Trek Video games based on Star Trek: The Original Series Video games developed in the United States Video games with textual graphics BASIC software Single-player video games