Generally games I love. They usually have story to them or are just adventure or pixelated games. The pixelated characters can be made of two pixels or 20 000 pixels (and I've played a game with 2 pixel characters). There are also visual novels. Reading and voicing the characters aloud or in my head is super fun. The soundtracks in game are also super important. Soft, mellow, heart-touching music is very much adored, so is up-beat music. Bad language my not be avoided but is never said, even in my head.
That's pretty much what I look for when coming to itch.io. It is a truly wonderous gaming platform.