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.
But you’ll need to focus, as playing the field can result in an unsatisfying ending, and no one likes that.
These games are often designed to be played multiple times.
Sloppy localization can often let dating sim fans down.
For example, Alice in Wonderland is a popular theme worldwide and the manga based on the otome game series regularly tops the New York Times Manga Best Sellers list.
Boys’ Love (yaoi) games feature men in relationships with other men -- created by and marketed to women.
She accidentally gets tangled up with the local police, the Shinsengumi, and the story evolves from there. It's a samurai history lesson with a Twilight twist.
And while their games seem cute, don’t let that fool you: the endings are bittersweet.
In Nameless you play as a woman who likes to collect ball-joint dolls, and who recently lost the grandfather she grew up alone with.
Generally you meet several characters, and will have to choose one to court.
In Japan, dating sim characters are referred to as “capturable” -- whether that means you capture their hearts or their bodies depends on the game.