Modding has been an incredible godsend for me. It started as just a hobby and quickly confirmed what I dreamt of as a kid was accurate. Making games is what I want to do with my life. It's also taught me to self teach and learn a bunch of stuff about the game industry.
Total War is a hybrid RTS and turn based strategy game with a massive modding community.
Kenshi is a really neat Indie game that the solo dev had the fore thought to enabled modding for