Part of the problem is that most of the games aren’t just extremely niche, they’re erotic 18 products and as such difficult to market. Last year Manga Gamer, a publisher usually known for its 18-and-older fare aimed at men, announced that they've licensed and are translating two new titles in an attempt to appeal to underserved audiences, mainly women and queer men. , slated to release on Steam, and the other is unique 18 boys love game, No, Thank You!!!
While BL game DRAMAtical Murder flourished in popularity on Tumblr, licensing problems means nobody has taken advantage of the audience. In general, comics made by gay men for gay men have completely different aesthetics and conventions than Boys’ Love for women, as can be seen in Fantagraphic's fantastically informative collection Massive: Gay Erotic Manga and the Men Who Make It. attempts to balance both audiences’ tastes in an intriguing way. you play as amnesic Haru, who is an exclusive top to his partners, whereas traditionally in BL games you'd be playing as a bottom.
Boys’ Love (yaoi) games feature men in relationships with other men -- created by and marketed to women.
The Niflheim is probably one of the best free-to-play mobile otome game examples that I can give.
The game has a bold art style with intense flourishes, and while you play as a Shadow Every-Girl, all your your potential partners range from bratty kings to zombies to ghosts.
While it was initially influenced by Japanese BL games, it covers more Western sensibilities. is currently available on PC only from Manga Gamer directly (though I’m told it can work on Mac via a Windows virtual machine). Korean company Cheritz has been releasing their Japanese-style dating sim games into English for a couple of years now, and recently got those games onto Steam through Greenlight.
Their latest, Nameless, is quite beautiful and differs from their last entry, Dandelion, in that it does not contain stats and instead is a straight up visual novel.
You play as Chizuru, who disguises herself as a man to travel to the capital of Kyoto in search of her missing father.