Both Red Dead games (story telling doesn't get better than this)

Fallout New Vegas (absolute best Western rpg)

Dishonored (the best stealth game out there)

Doom Eternal (the greatest single player shooter ever)

Skyrim (the world in this game is just so cool)

GTA4 (this game with both DLC's is the definitive gta game)

Bioshock 1 and infinite (no explanation needed)

Halo 3,Reach, and odst (these games are just works of art)