May i ask which one who have avoidable NTR? If you don't remenber for all, it's fine but nebel type of game are awesome.Honestly the existence of nebel makes most sandbox NTR games just bad or shallow in design, I played a lot of JP dlsite games and there isn't many that give the same good sandbox game feeling. If anyone is interested in these type of games I highly recommend the following:
An Alchemist Tale (Freedom of choice + unique art style)
Artificial Blood (Cool Art + Amount of scenes)
The Tyrant (I like the female character looks in this game)
A Struggle with Sin (Amount of Content)
Horton Bay Stories Jake (Bunch of stuff to do)
Honorable mentions:
VALKYRIA (Random bullshit amount of scenes)
Silly Girls Quest (Amazing art)
I don't know if it count in the same category but i like stuff like that :
リビド~淫・秘薬乱痴狂 ( RJ439148, i don't know if i should post a dlsite link in a thread about another game ). The game requiert to take attention to detail
"in a certain mansion". This one isn't NTR per say, but the MC is into a girl, and this particular girl can be raped multiple time so it definitivly have some NTR vibe. More importantly it have an horror ambiant, which is to me, what NTR feel like.
These 2 games have an horror (not gore) ambiance who complement the NTR well, you can save the main girl (or some girl) and you have multiple choice who are taking into consideration UNLIKE the game we are talking about here ^^