Once again, it's not about doing a full playthrough... It's about replaying some scenes because they are arousing (enough for you to fap to or something similar)...
If you're just in the world and not a character... Then any of the games where you're among the few males left and there is an abundance of thirsty women.
Futa/Trans tag exists for games that have either option. Trans doesn't necessarily mean they will lose their genital parts (or gain any). It includes transgender which is just a gender change, not including a sex change operation. As for what is considered a futa it is still up for debate by...
The Copycat
CaptainKitty's games
My Friend's Family
Summer Of Love
The Engagement/Jealousy
New Earth
The Tyrant
Starless
Midnight Ride
Moving Down
The Fosters
Bad Manners (sometimes)
What the devs do with said models matters more to me. Sometimes it's better other times it's worse, or they reinvent the perception of the model due to the story attached to it.
Plenty of ways to make something like that less stale.
Games but not porn : ATM, Cucking, Loli/Shota (obviously), Rape (not rough sex), Femdom (it's fine in a game sometimes, but I am absolutely turned off otherwise).
I think this is it. I don't think I have anything I don't want to see in a game that I don't want to see in porn either.