Better edit the title and your question from NTR to Netori, while Netori falls under the subgenres of NTR most people like to separate them to avoid confusion, and most Netori fans will straight away ignore this thread haha.
The most famous ones are the likes of NTRaholic, NTR legend and Hero party must fall (personal rec), if you are searching for sandbox 3d netori focused games i aint got any, most games only have netori subplots.