Doujin game meaning: what doujin games are and where they are sold

A doujin game is a self-published Japanese game made by a hobbyist or a small group of hobbyists. The group is called a circle. The word doujin is written 同人, read dōjin, and refers to people who share an interest. The full Japanese term for the games is doujin soft, short for doujin software.

The word describes how a game is made and sold. It says nothing about genre or content. A doujin game can be a shooter, a fighting game, a visual novel or a role-playing game. It can be a fan work or an original one. It can be an adult game or suitable for anyone.

This page explains what the word means, how doujin differs from indie, which games made the scene known, where they are sold, and how the adult side of it is regulated.

Key points

• Doujin means a group sharing an interest. A doujin game is one such a group publishes for itself.
• The makers are called circles. A circle can be one person.
• It is a way of publishing, not a genre.
• Doujin and indie overlap. The difference is in ethos and in where the games are sold.
• Comiket is the main event. It has run since December 1975.
• Some doujin games are adult games. The word does not mean that by default.
• DLsite is the largest download store. Steam now carries doujin games too.
• No ratings body reviews doujin games. The criminal law still applies to them.

What the word means

Dōjin is two characters: 同, same, and 人, person. Wikipedia’s article on doujin gives the sense as a group of people who share an interest, activity or hobby, and lists “clique”, “coterie”, “society” and “circle” as English translations.

The word predates games by a century. It was first used for the literary circles of the Meiji period, in which poets and novelists met and published their own magazines. After the Second World War manga artists formed groups on the same model, and the word followed them.

Several related words are worth separating.

English spelling varies. “Doujin”, “dōjin” and “dojin” are the same word. The first is the most typed, because the long ō is awkward on a keyboard.

Wikipedia’s article on doujin soft defines it as software created by Japanese hobbyists or hobbyist groups, “more for fun than for profit”. It notes that the term also covers board games and card games made the same way.

Doujin game vs indie game

The short version is that every doujin game is independent, and the two words still point at different things.

The most careful treatment is a paper by Tomás Grau de Pablos in the journal Game Studies, published in September 2024. It follows the researcher Koyama in describing doujin games as titles that are “self-published or created by a small group of developers”, usually sold at hobbyist events. It describes indie as “a commercial category that evokes a general aesthetic or ethos around art”.

The paper’s argument is that the line was drawn later than people assume. In the 2000s English-speaking players used the two words almost interchangeably for Japanese games. A separate “Japanese indie” category was built in the 2010s, and the paper dates its arrival to the first BitSummit festival in 2013. It quotes one developer’s summary of the present: “doujin games are starting to become indie”.

In practice the same game can now be both. A circle sells a game on disc at a convention and the same build goes on Steam a few months later.

Where doujin games came from

Doujin software began on Japanese home computers. Wikipedia traces it from the PC-88 and PC-98 through the MSX, FM Towns and X68000, and notes that from the 1990s it was made mainly for Windows. Recent releases also reach phones, consoles, macOS and Linux.

The scene grew up around one event. Comiket, short for Comic Market, was first held on 21 December 1975 with an estimated 700 attendees. It now takes place twice a year at Tokyo Big Sight. Wikipedia’s table of recent editions, drawn from the organiser’s after reports, gives these figures.

Games are a small part of it. The Comic Market Committee reported in 2015 that doujin soft made up 5% of all doujin works. The same report found that 88% of doujin works of every kind were derivative to some degree and 12% were completely original.

Doujin games that became famous

Three releases, all sold at Comiket within two years of each other, did most to make the form known.

• Tsukihime (December 2000). Type-Moon released its first visual novel at the winter Comiket of 2000. Type-Moon went on to become a commercial company and is listed by Wikipedia among the circles that started in doujin.
• Higurashi When They Cry (August 2002). The circle 07th Expansion released the first chapter on 10 August 2002. Wikipedia records that the series had sold more than 100,000 copies in Japan by 2006, which it calls unusual for a doujin game. Console versions followed from 2007 and an English release from MangaGamer in 2009.
• Touhou Project (August 2002 on Windows). Jun’ya Ōta, known as ZUN, is the only member of the circle Team Shanghai Alice and makes the games alone. The first Windows entry, Embodiment of Scarlet Devil, was released on 11 August 2002 at Comiket 62. In October 2010 Guinness World Records recognised Touhou as the most prolific fan-made shooter series.

Touhou also shows how doujin culture handles fan works. ZUN places few restrictions on others using his characters, asks for attribution, and forbids unauthorised commercial distribution. An entire secondary scene of fan games, music and comics exists under those terms.

Another title mattered outside Japan. Recettear: An Item Shop’s Tale was made by the circle EasyGameStation in 2007 and published in English by Carpe Fulgur in 2010. Wikipedia credits Steam’s opening to outside developers with helping to introduce doujin games to players in the West.

Are doujin games adult games?

Some are. The word carries no such meaning by default.

The confusion has a history. The Game Studies paper notes that in the early 2000s English and Spanish fan forums used “doujin” mainly for Japanese fan works, and that many people associated doujin games with adult content. The association stuck to the word abroad.

Three facts correct it.

1. The best-known doujin series has no adult content. Touhou is a set of shooting games.
2. Doujin circles work in every genre. Wikipedia’s list of notable circles covers fighting games, shooters, role-playing games and visual novels.
3. Adult doujin work is a large category of its own. Much of what the download stores sell under the doujin heading is for adults.

For the words that do describe adult content, see eroge, nukige, nakige, galge: adult game terms explained and bishoujo game meaning. Many of the titles in our monster girl games guide are doujin works.

Where doujin games are sold

Doujin games reach buyers by four routes.

• Conventions. Comiket is the largest. Wikipedia also names Freedom Game, which is for free games only, and Digital Games Expo, which focuses on doujin games.
• Doujin shops. Specialist retailers in Japan stock circles’ work outside the events.
• Download stores. DLsite is the largest. It was founded in July 1996, launched an English-language version in January 2004, and reported more than 9 million users worldwide in 2022. It sells all-ages and adult work side by side.
• Steam and consoles. Publishers now bring doujin games to Steam and to console stores. DLsite itself announced in February 2018 that it would publish games on Steam.

The two largest routes for an overseas buyer work very differently, and we compare them in DLsite vs Steam for adult games. Payment is the usual obstacle: DLsite’s operator said in April 2024 that card payments by Visa, Mastercard and American Express had been suspended on its platforms. The background is in how payment processors decide which adult games can be sold.

Who regulates doujin games

Nobody reviews them before release. That is the main legal difference between a doujin game and a commercial one in Japan.

Commercial PC games are reviewed by an industry body, and console games by CERO. Wikipedia’s survey of video game content rating systems notes that doujin software is not subject to those arrangements, and that distributing obscene material can still be punished under Article 175 of the Penal Code.

The rules a circle does meet come from the places it sells.

• Events set conditions. The Comic Market Committee’s guidance for circles says it checks everything offered for sale, including items sold at earlier editions, and that checking work on electronic media can take longer.
• Adult work must be marked and kept from minors. The same guidance asks circles to label adult work and to check identification where a buyer’s age is unclear.
• Explicit images must be modified. We explain that rule in mosaic censorship meaning.
• Fan works depend on the rights holder. The committee warns that goods likely to be confused with official merchandise, or sold beyond the scale of fan activity, may be treated as piracy.

Download stores apply rules of their own on top of these.

What this means for developers

A developer outside Japan can learn three things from the doujin model.

1. Selling direct at small scale is an established route. Wikipedia notes that some creators make a full-time living from doujin sales.
2. The stores that serve doujin circles look abroad. DLsite has had an English version since 2004 and added nine languages in 2023, for 14 in total.
3. Self-publishing does not remove the rules. It moves them from a ratings board to the store and the event.

The practical choices are set out in how to make an adult game and where adult games can be sold in 2026.

What is still unknown

• How many doujin games are released each year. We found a share of doujin works from 2015 and no current count.
• What share of doujin games are adult. The 2015 figures cover all doujin works and do not separate games.
• How much Recettear sold. Wikipedia’s article says more than 300,000 copies, and the headline of the report it cites says more than 100,000.
• How many circles make a living from games. Sources say some do and give no number.

How this page was put together

Definitions and platform history come from the reference articles listed in the sources. The comparison with indie games follows the Game Studies paper, which is peer-reviewed. Release dates for the three games come from their Wikipedia articles. The Comic Market Committee’s guidance was read in Japanese on its own site on 12 October 2026, and the passages paraphrased are our translation.

The studio has not sold work at Comiket or through a doujin store, and nothing here is a first-hand account of either.

This page was written on 12 October 2026. To report an error, see the corrections standard.