I’d say :

The first Deus Ex and its first prequel Human Revolution Mafia I Max Payne 1 and 3 GTA III Doom 1/2 Doom 3 Duke Nukem 3D Morrowind Skyrim (modded and fixed, vanilla is pure garbage) Blood Omen 1 Silent Hill 1 and 2 Resident Evil 1 and 4 (and their remakes)