The last three generations of console haven't really given us a great challenge and we've become lazy, our teenage/toddler/young adult selves would look at us in discrace, I mean, how many times did you have to start; Sonic, Alex The Kid, Mario, Toe Jam and Earl etc right from the beginning and still want to play it everyday?. Now days people die 5 times in a row and thats it "this games shit" . AAA titles killed the challenge, lowered the bar for entry and held your hand. Then, for the "Gamer" they added veteran difficulty and called us "Hardcore Gamers". The veteran difficulty was more of a grind than it was a challenge, more frustation than stimulation. Games where when you die/lose, it was your fault and yours only, there the real challenges. anyway i've lost track of where i was headed.
I must point out that i do like easier games, but every-now and then i crave a challenge, heres the games i know of this generation that fed my addiction.
Dark Souls, Demon's Souls, Super Meat Boy, Fez(without internet help if possible) and Spelunky.
If people know of any others to keep me or others going please feel free to tell us.