judging from your responses to this thread you are indeed quite the coneseur. So I am going to try rapidfiring instead of guessing.
RPGmaker parameter:
My sister mia
A new Dawn
Mucchi Muchi (there are 3 games in this series, I think it is like summervacation, schooltrip and 1 more)
YAMAMOTO DOUJINSHI dragonball games (3 in this series, kama paradise and 2 about bulma)
Peasants Quest
Noxian Nights
Not nesesarily top down, but includes rpg elements or at the very least rape.
Virgin Invader
Ghost Hunter Vena
Alchemist Tia
Xenotake
BlazingAngel Mistletear
Pixel Town 1 and 2 (not sure if second is on f95 in english)
Alternate Dimansion Mystery record
Guild Meister 1 and 2
Mario is missing
VN or borderline no gameplay
Euphoria
Bible Black (like you haven't played this one...)
Akabur games (Witch Trainer, Princess Trainer, Star Channel 34)
Bunny Black (I have only played the second one)
All of the above games have my stamp of approval and feature rape (mucchi muchi only if you consider being oblivious to sex rape, so only technically and not necessarily to satisfy a fetish requirement.(I guess my sister Mia barely features rape either, since she gets in on it by the end of the first episode))
If you have played all of these, I will start getting into games I did not like myself, or maybe ones I forgot to list here
Wow! Thats a lot of suggestions, thanks. Lets start with the actual RPGs;
I won't count My sister Mia or Mucchi Muchi since I want rape and corruption to be the focus of the game and Mucchi Muchi can barely be considered rape and seems way too comedic.
I've played most if not all of the YamamotoDoujinshi games and while fine and probably great for DBZ fans, they aren't particularly outstanding and feel somewhat limited and linear, great art though, very reminiscent of early dragonball.
Peasants quest just looks goofy and kind of ugly, it seems to focus around monster girls and fetishes so I assume that the actual rape content is minimal and not take seriously.
A new dawn looks... Interesting, less silly but just as ugly as peasants quest, but I'm a sucker for a fantasy setting and female protag so I'll probably check it out if you vouch for its quality, my only concern is that the main character seems to always wear skimpy clothes so I'm worried that the corruption element may be lacking. I much prefer strong women slowly being corrupted and brought low than just instantly liking sex and turning into a slut, there is a nuance to it, regardless I won't judge a book by its cover.
As for Noxion Nights, asides from not being a fan of LoL I just didn't find the game to be that fun or great, it was fine, the art is nice but the game itself was just too simple and limited. But maybe thats just personal preference, I'd still highly recommend this game to people.
I'm not gonna tackle the rest game by game since I'm specifically looking for an RPG so I'll just say that I have played them all and found most to be decidedly meh, mostly consisting of walk down a corridor, do a bit of platforming, get raped by the same
5 monsters and occasionally backtrack. Not all followed this formula but most did and they all left a lot to be desired when it comes to character development and story, they simply lacked the depth that RPGs can have, none of them engaged me and so the rape had no impact and felt hollow. The only side scroller that I've ever been marginally excited about was Xenotake since it had strong looking female soldier protagonist (which is rare) who is also a lesbian according to the games ending. It could have had a great in-depth story and branching corruption plot but instead all we got was a linear, boring and hollow story with no impact, character or payoff, at least game was better than Ghost Hunter Vera.
The VNs you've listed are far from the best in their field, although Euphoria and Bible black are classics. There are many, much better visual novels; Captive Market ~Trapped Elven Officers~ is a personal favourite although anything by Lilith is probably good and there are so many more quality VNs that I've played. The reason I specified RPGs for this forum is that I'm burnt out with other forms of games like sidescrollers and VNs, I still have a fairly sizeable catalogue of those to go through, I just much prefer RPGs, there are just so many out there that are a waste of time, which is why I'm asking for good quality and depth.
If you want to know what my standards are for great RPGs I'll explain; lets compare a great game like Treasure Hunter Mai to literally anything made by Clymenia, which range from decent to terrible. Both typically have similar tones and Clymenia games actually have the head in art and character design, but what really defines their quality is their gameplay and writing. All Clymenia games play the same way, go around clicking on the right NPCs to get a higher corruption stat, rinse and repeat to unlock more scenes, the RPG sections only exist to block off certain areas of the game and pad out the play time, there is no depth or significance and its just a waste of time. Treasure Hunter Mai, whilst also having the "click in the NPC to raise corruption" mechanic, also has other ways to experience H-content such as; mid battle and post defeat rape, events that progress as you progress the story, character driven events and subplots that also occur as you progress the story. Having the H-content occur with and as a part of the story and having your choices matter and make an impact on what events occur is big, it makes the world feel alive and it immerses you in the world and story. Furthermore since the H-content is story driven it makes the corruption element so much better since we can see when and how the characters are developing, this deeper characterisation makes me care (in a way) about the characters and the story and it gives their actions weight and consequence. Now Mai is by no means a perfect game, while the writing structure is great the actual writing ranges from decent to dumb and the game is absurdly silly at times, the actual story is ridiculous and is only carried through by the character's and their development. However it is the slow and deep character development and the implementation of genuine impact and consequence that makes this game, at least in my opinion, truly great!