StarCraft and Gran Turismo are great. I wouldn't take time out of my day for the other titles he selected, though. Good games, just not to my taste.
My list, clickable for those interested:
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Red Orchestra: Ostfront (Most realistic game I know, and I've played OFP)
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Natural Selection (Balanced asymmetrical teams, it's an RTS to one player)
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Deus Ex (Best game story ever, best single player GAME ever)
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Metal Slug 3 (Contra refined with a great sense of humor)
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Einhänder (I still play this, and I got it in 1997)
Trust me. I'm a video game connoisseur.