Not sure if you're trolling but these "[VN], [RPGM], [Ren'Py]" are prefix tags Ren'py and RPGM (RPG Maker) are engines and VN is short for Visual Novel.
As for NTR it can mean two things Netorare and Netori, which are a genre but on this site NTR is specifically referring to Netorare so it's not confused with the other and you can find the meaning