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Consumers who buy indie games seek titles priced between $15 and $25, discover their next purchase via YouTube, and prefer single-player experiences.
That's according to a study conducted by an independent analyst group on behalf of Humble Games, which surveyed around 5,000 gamers between 18 and 45 years of age, living in six different countries, while trying to trace a profile of people who buy indie games.
source https://www.gamesindustry.biz/indie-games-who-buys-what-and-why