Special request of Nemiegs. NTR C. Probably incest. Very hard (BDSM, spanking, rape, blackmailing and much more)Any wife incest/cheating game??
Family, Friends and Strangers [JohnAndRich] VN. Blackmailing, NTR C, cheating, probably incest. Male protagonist.
Lily of the valley (P&P). RPGM. Cheating, NTR A. Incest (father in law). Classic one.
All Inceton games. Summer with Mia, Echoes of lust, Inside Jennifer. Great games.