As someone who's been dedicating a good bit of time into searching for decent western "NTR", I feel somewhat qualified to answer this. The short answer is: No. The longer answer is, while there aren't any 3D games that are purely NTR, there are some games that do feature NTR to varying degrees. None of these are completed, however; it seems like NTR in western erotic games is a bit of a new concept. So if you're okay with following some in-progress games that dabble in NTR, here are a few I'm following:
Anna Exciting Affection - Female MC with corruption/cheating themes. It's told from a female perspective which might not fly with some around these parts, but the model for the main heroine is gorgeous. The writing is a bit sub-standard, but the beautiful renders carry it. The dev updates fairly regularly too.
The Tyrant - very early on in development, but definitely dedicated to exploring NTR. There's planned NTR routes for every heroine in the game, so it's worth keeping an eye on.
Babysitter - IMO one of the more higher quality NTR games on this list, the main heroine has two different NTR routes in-progress, and the secondary heroine has some NTR scenes as well. Better writing than the other games on this list, although that's not the highest bar to clear.
Taffy Tales - worth mentioning for the unique artstyle, but the NTR is still very early in development.
Seeds of Chaos - dark fantasy game, with a handful of NTR scenes. Ambitious scope and decent writing.
The Adventurous Couple - Netorase, which isn't really my bag, but if you're into that it's worth checking out.
Angelica's Temptation - abandoned, but worth mentioning since the 3D renders are pretty good and there's a fair amount of scenes. Interracial themes.
If anyone knows any others, I'd be interested to know them. Some other notables are Noemi's Toscana Rebirth and Farmer's Dreams, both of which have threads on this forum. I'm particularly monitoring the former since the dev seems to produce pretty high-quality stuff. The only one from the above list I can really recommend is AEA, if only since there's a lot of content already out for it (and because the character design for the main heroine pushes all the right buttons for me). But like someone else said, most of these games end up feeling empty because they're either shoddy quality or not a lot of content is released yet, or both. Hope this helps.
