While downloading mods is generally not a crime, it does exist in a legal "gray area."
The community forums are active, with dedicated threads for mod requests, troubleshooting, and collaborations. The site’s "Modder Appreciation Week" (every April) features donation drives and coding competitions.

TES V: Skyrim
TES IV: Oblivion
Fallout: New Vegas
Sacred 3
Divinity Original Sin
Dragon Age 3
The Witcher 3: Wild Hunt
Mass Effect 1 - 3
World Of Tanks
Warcraft 3 Dota Allstars