I made a post like this a while ago, and it seemed to go over well, so why not give it another go?
Memoirs of an Angel - It’s getting remade (the link for that is in the first paragraph), but the original is very good in its own right. There’s a romance with the villain, and it’s a different take on that than the usual.
ReSet 1: Thief of All Hearts - Got remade, and looks gorgeous! Same goes for the sequel, which is…
ReSet 2: Under the Golden Sun - Both of these games have a murder mystery thing going on, and are really fun to play. I suggest you give them a try. Not heavy on romance.
Aris High Junior College - Android only. High school, comedy, slice of life.
The Reject Demon - YURI! That means G/G! I put this in with the otome games because it’s actually made for girls and not guys, like most yuri.It’s available in the same format as Nachtigal was, so if you really enjoy it please donate to the creators.
Orange Couch - An otome where you can read the story from both perspectives.
Memento Dears - Very cute, with great art.
Under the Sycamore Tree - Drama! Romance! It’s good go play it.
Demon Add - IT’S INTERESTING
Ooh thanks for this!