Why no mod for nba 2k15 nba 2k16 nba 2k17 nba 2k18 ?

Hi , why nobody make mod for nba 2k15 , 16 , 17 , 18 ?

It's just the way it goes with most games once they're a few years old. People move on, including modders. There's a smaller audience when sticking with older games, so it's harder for modders to justify the time and effort.

Additionally, games in that generation aren't quite as modder-friendly as NBA 2K11-NBA 2K14, which maintain a fairly enthusiastic following as a result.