I've played too many to list off the top of my head. But I'll just throw some of my favorites below, I suppose. Nothing is in a specific order.
Danganronpa
Saya no Uta
Lamunation
I Will Start Over and Over Again for You
Kara no Shojo
Little Busters
Steins;Gate
The Sweet World of the Ephemeral
Grisaia no Kaijitsu
Grisaia no Rakuen (Although, it wasn't as good as Kaijitsu)
Danganronpa
Saya no Uta
Lamunation
I Will Start Over and Over Again for You
Kara no Shojo
Little Busters
Steins;Gate
The Sweet World of the Ephemeral
Grisaia no Kaijitsu
Grisaia no Rakuen (Although, it wasn't as good as Kaijitsu)