NTR, short for netorare, is a Japanese term for stories in which the protagonist's partner becomes involved with someone else. It is one of the most polarizing tags in adult gaming: some players seek it out for the drama and emotional stakes, while many use it purely as a filter to avoid.
If you are looking for NTR, check whether the game makes it mandatory or optional, since many developers include toggles or fully avoidable routes. Writing quality and emotional weight separate memorable titles from shallow ones. If you want to steer clear, look for listings that mention an NTR-free path or exclude the tag outright. LustFever keeps each listing on its latest version and links to the developer.
Click a tag once to include it, twice to exclude it.