System Shock 2. It kept me up nights. Not just playing but the creepy atmosphere really seemed to soak into me until some moments during the game were downright terrifying.
"Hurry...RUN..."
"The Many sings to us..."
Baldur's Gate 1 and 2 tie for second but only because of Minsc's one liners.
From newer ones, most probably Skyrim and I also enjoy lots of Star Wars games. Team Fortress 2 is also one of my favorites (and pretty much anything from Valve).
Super Mario Bros. 3 is my all-time favorite game. There are games that are graphically and technically more impressive but after all these years this game is still perfect.
there are many video games but i like need for speed,red line rumbles, monkey quest, and some action games like super bike nation or sewer run 2, i enjoy a lot when playing. try them hope you will enjoy them.
Counter Strike: Source
Counter Strike: Global Offensive
Combat Arms
Skyrim
Alan Wake
The Secret World
Heavy Rain
Far Cry 3
Battlefield 3
Payday: The Heist
Hitman: Absolution