Since 2005, Steam has added nearly 6,000 adult-oriented games as of September 2025. This figure comes from a Reddit post that tracked published listings — by comparison, the platform hosted only a single mature title in 2010.
Because October 2025 is already underway, the tally is slightly out of date. The methodology behind the count isn’t fully explained, and the study’s authors are responsible for the final numbers. Despite widespread criticism over a deluge of low-quality, provocative, and AI-generated games on Steam — where moderation is comparatively lenient — the total may still be lower than many expect.
Other storefronts have also featured adult content. For example, the eShop accepted provocative One Piece–inspired releases like Pirate Anime Quest: One Boys’ Journey, along with visual novels containing suggestive prompts and bold, AI-created depictions of One Piece–style characters.
Source: iXBT.games