>>19626032Dwarf Fortress. Mod the nigger dwarves out if playing the Steam version.
Deus Ex
System Shock 2
Fallout 1 and 2
Morrowind
X-COM
Mount & Blade
ARMA
Half Life 1 and 2
Red Orchestra 2
Hearts of Iron 4: TNO Mod (This is a big one)
Rainbow Six 3
Planescape: Torment
Dragon Age: Origins
Alpha Protocol
GTA: San Andreas
Metal Gear Solid 1-5
Enderal: Forgotten Stories
POSTAL 1 and 2
Thief: Gold
Tactics Ogre
Psychonauts
Hitman
SWAT 4
EYE: Divine Cybermancy
Just to name a few.