I like the following games very much, Maybe it will give you guys a impression of what kind of games i like:
Gears of war series. ( liked it very much!)
Fallout series. ( Favorite games)
Elder scroll series.( loved oblivion and skyrim!)
Red Dead Redemption.( This game was a masterpiece, Best game i've ever played)
Metro 2033. ( Very good good liked it very much, The story is what i really liked, I'm more of a gameplay guy but this story was so good i stopped caring about the gameplay)
Halo series. ( Pretty good series, Not the best(opinion) )
Assassins creed series( I liked ac 1 and 2)
Gta series( Liked the older gta's more then the newer ones)
Saint row series ( LIked it very much!)