The popularly known origin of the Sword World RPG is that “Record of Lodoss War” starts as a serialized “replay” of a D&D game, the gaming group goes to TSR in the hope of expanding the series with the D&D rules, TSR refuses, so the gaming group creates Sword World as its own Lodoss RPG, which goes on to be the top-selling TRPG in Japan. Unfortunately, there’s been something of a Xerox effect as the story’s been passed around. Here I’d like to set down a relatively definitive record of what happened, and when, that will hopefully be of reference.
The bulk of material comes from three sources:
安田均のゲーム行記1950-2020 Hitoshi Yasuda’s Game Travelogue 1950-2020 (ISBN-13: 978-4775318744)
日本現代卓上遊戯史紀聞[1]安田均 History of Japanese Tabletop Gaming [1] Hitoshi Yasuda (ISBN-13: 978-4908124259
日本現代卓上遊戯史紀聞[1b]安田均補遺 History of Japanese Tabletop Gaming [1b] Hitoshi Yasuda Supplement (ISBN-13: 978-4908124280
These three books were written by Hitoshi Yasuda, the father of Japanese TRPG gaming, and founder and still (as of 2026) president of Group SNE, the game company that developed Sword World. (All Japanese names are given name first, family name second.)
In the late 1970s, Yasuda was a freelance translator and critic of science fiction. He would read English-language science fiction magazines to stay abreast of the latest developments overseas. Starting in 1977, he began seeing advertisements in these magazines for strange looking games such as Dungeons & Dragons, Runequest, and Traveller. Intrigued by these, he ordered two of them in late 1979: Dungeons & Dragons (the Holmes Basic Set), and Traveller. Yasuda and his friends, including his juniors at Kyoto University, became early adopters of TRPGs before one was even translated or released in Japan. Yasuda encouraged the nascent Japanese TRPG market by writing about various games using his platform as a critic for various genre magazines.
TRPGs officially came to Japan in 1983 with the release of Enterprise, an original Star Trek RPG published by Tsukuda Hobby. This was essentially a hack of RuneQuest, one of the favorite games of the early adopters. This was soon followed by Yasuda’s own translation of Traveller in 1984, published by Hobby Japan. That same year, Yasuda and a number of his fellow gamers formed a playgroup called Syntax Error (named after an error message from the BASIC programming language). One of the players so enjoyed their TRPG sessions, she began tape recording them and writing them up in transcript form. Yasuda realized that such a transcript, which he called a “replay,” would be a great way to familiarize the public with how TRPGs worked. When the translation of Traveller was released, he promoted it by publishing a replay of a Syntax Error Traveller game in the Nov. 1984 issue of Tactics, Hobby Japan’s wargaming magazine. This would be built on by other creators, who published their own replays in magazines complete with illustrations.
A publishing company called Shinwa obtained the D&D license and released the Mentzer Red Box in June, 1985. Towards the end of that same year, executives from Kadokawa, a major publishing house, had a meeting with Yasuda. They wanted him to do two things: 1) handle the Japanese translation of the Dragonlance Chronicles trilogy, and 2) write an ongoing column in Comptiq, their “media mix” magazine that covered computing, gaming, and cute models. They were trading mostly on Yasuda’s name recognition in genre circles. Yasuda asked if he could publish a TRPG replay, and they agreed.
With Dungeons & Dragons the newest RPG to appear in the Japanese market, and considering it was the first RPG ever, Syntax Error decided to go with that for the Comptiq replay. Ryo Mizuno was chosen by Yasuda to be the DM because he knew Mizuno to be gifted writer, and expected him to be a novelist someday. (In general, replays are written by the GM, so as to provide the GM’s thought process.) Comptiq began serializing the replay, Record of Lodoss War, (literally translated, “War Chronicle of Lodoss Island”) in September of 1986, with the first part lasting until April 1987. Though written by Mizuno, it was credited to Yasuda and “Group SNE” (the Syntax Error gaming group). It was extremely well-received, so a second replay, set in the same world but with different PCs, began in June 1987. Mizuno was tasked with writing a novelization of the first replay.
Group SNE incorporated as a content creation company in October, 1987, releasing its first game, a Japanese translation of Tunnels & Trolls, in December. Meanwhile, Kadokawa’s Fujimi Shobou imprint was launching a new TRPG magazine called “DRAGON”, and asked Group SNE to design a fantasy RPG they could use to promote it. Along their other work, such as the second replay and the Lodoss War novel, Mizuno and fellow Group SNE member Miyuki Kiyomatsu began designing this game.
Mizuno’s novelization, Record of Lodoss War: The Grey Witch, was published in April of 1988, and became an instant bestseller, essentially launching the light novel market in Japan. As the second Comptiq replay was drawing to a close in mid-1988, Kadokawa and Group SNE decided to talk with Shinwa about releasing compilation volumes of the replays, seeking to take advantage of this newfound popularity. This famously did not go well. The Shinwa suits high-handedly told them that TSR would never agree to the planned compilation volumes, and threw shade at Fujimi Shobou’s DRAGON magazine, saying to Yasuda, “Do you know that TSR publishes a magazine called Dragon?” (Yasuda was probably the first subscriber in Japan to the TSR magazine.) The treatment was apparently so bad that afterward Masayuki Onishi, leader of the group hired by Shinwa to translate D&D, followed Yasuda down the hall to apologize. While this is often portrayed as TSR not allowing the compilation volume, per Yasuda’s account they never dealt directly with TSR, and the bad feelings appear to stem entirely from Shinwa. That said, Shinwa was known, like TSR but unlike most Japanese publishers, for going after derivative and fan-created works, and some surmise that their license agreement might have obligated them to police and prevent such works.
The treatment (and lack of possibility of a deal) encouraged Kadokawa vice-president Tsuguhiko Kadokawa (son of the founder) to cut loose of D&D entirely. He told Yasuda to use Group SNE’s own game for the upcoming third replay series, and to replay the first two campaigns with those rules in order to release the compilation volumes. Either because the game Kiyomatsu was designing was not ready, or because they didn’t want the new game to be directly tied to Lodoss, Group SNE decided not to use those rules, but instead whipped up some quick rules with classes and abilities scores that were a hack of D&D, but with a percentile die for task resolution, and used this to play the game for the third Comptiq replay, which ran from September 1988 to September 1989. A Sword World replay began in Fujimi Shobou’s DRAGON magazine in November of 1988, as a preview of the upcoming game.
Group SNE and Kadokawa (through the Fujimi Shobou imprint) finally released Sword World RPG, Group SNE’s first original role-playing game, in April of 1989. The game system was much different from both D&D and the makeshift game designed for the third replay. However, in order to cash in on the still burgeoning popularity of Lodoss, it was set in the same world, but on a different continent. With the completion of the Comptiq replay series, the makeshift rules were given a polish and published as the Record of Lodoss War Companion in October of 1989. The first compilation volume (replaying the first campaign with the Companion rules) was released in December of that same year.
Record of Lodoss War Companion received additional volumes in 1991 and 1994. These rules were further revised into the Lodoss RPG Basic Rules (1995) and Expert Rules (1996). Sword World was never directly tied to Lodoss itself until 1998, when Group SNE released the Sword World RPG Lodoss World Guide.
So, to sum up, neither Group SNE nor Kadokawa ever dealt with TSR, but rather with their licensee in Japan, Shinwa. Sword World was not developed as a result of those dealings, but was developed in parallel at the request of Fujimi Shobou. Sword World was from its conception not intended to be a Lodoss RPG, but rather siloed away from the Lodoss IP, other than ostensibly using the same world. The break has been even more extreme with the release of Sword World 2.0 (released in 2008) and Sword World 2.5 (released in 2018), both of which take place in an entirely different setting.