In no particular order (well... kinda), games that I eagerly await each update or have played thoroughly:
Ethan's Legacy (no more updates but a must play for me)
Waifu Academy (love the silly ecchi anime setting)
Mythic Manor (what can I say? sexy, funny and well executed)
House Arrest (I just love Alanna's crazy bitch personality)
Research into Corruption (was sad to see it go, and hope the independent update holds up to its legacy)
The Wind's Disciple (great game, great art, great scenes)
Dating my Daughter (sad to see it go too)
Summertime Saga (a lot of features, wacky story, nice art, the only downside is the sameface syndrome)
Dreams of Desire (best mom of any weg)
Dreaming of Dana (the feels, man)
Honorable mentions:
Zoe's Temptation (being one of, if not the, first wegs I played it holds a special place)
Dual Family (story is great, if not way too slow)
Solvalley School (followed this since the first RPGM release, it's not on the main list only because I like House Arrest more)
Big Brother (it had its ups and downs, more downs than ups... but at some point it was a good game, I guess)
Four Elements Trainer (love the humour and episodic style)
Corruption (kind of a guilty pleasure)
Lab Rats (nice, well put together game)
Games that I have my... Issues with:
Anything by Icstor/Inceton/ICCreations (the same story over and over, if you played one, you played them all)
My Cute Cousin (I kinda want to like this game... But THE FACESSSS)
Most female protagonist games (the same reason as Icstor/Inceton/ICCreations)