...

Games from the Sekai Bundle (not all are good, but more than half are decent, even great)
Games from the Mangagamer and friends bundle (especially If my heart had wings)
Games from the Sakura Bundle (mostly fanservice...)

Non-bundled:
Danganronpan Series
Doki Doki Literature Club (free)
Lucy -The Eternity She Wished For-
Amnesia Memories
Hyperdimension Series
Games from SakuraGame (ecchi/h* and very cheap)