I Love Daddy - I played this game 9 months ago, and it's still on my system even though it's been complete, it's just a good story in my opinion.
Coceter Chronicles - This is my absolute favorite game.
Depraved Awakening - One of the best games out there, seriously, it's well made, well written, and looks beautiful
Long Live the Princess - One of the first Life Sims to actually have a plot beyond, "Gotta fuck-em-all".
Babysitter - A VN in the same style as DMD but with quality writing.