Fallout: New Vegas
My ultimate favorite fallout game even though i like fallout 3 alot because of the story i like Fallout NV more because of the freedom you have.
Grand Theft Auto 4.
To me it's better then GTA 5 it had a better story the graphics may not be the same but that doesn't matter the storyline in GTA 4 was worth playing more then once
GTA San Andreas
Basically the same thing as GTA 4 the storyline was great and is one of the best GTA's out.
Hitman
Been playing the series since i was a kid, i've played every single one up to the newest Hitman
Sleeping Dogs.
I know not a lot of people would of picked it but i like how it has a GTA type theme but in a completely different country giving it a whole new vibe