At least 150 or so games on Steam alone. Another 90 or so on GOG(though some of those are 3-4 game compilations of older games).
And a few on PS3. I still have to play Silent Hill 1-3, God of War 2-3 and Final Fantasy 9 and 10. Oh, and Breath of Fire 4 and Okami.
And I ever find a cheap copy of Dark Cloud(or DC2) there's that.
I figure by the end of my life I'm gonna own every game in existence and only have played a tenth of them.
I just finished the Mass Effect Trilogy(including my first time playing Mass Effect 3), so I'm still kind of recovering from that(Not the ending, which I thought was good enough, but just doing 3 big games in a row and sinking a couple hours per day into).
I'm gonna play Dreamfall:Chapters(since I'm a backer and I've been waiting for a good 7 years to see them try to answer of the questions from dreamfall) and the season 2 premiere of The Last Door next.
After that, I'm not sure what I'm gonna play. Opening my GOG or Steam Library is NOT helpful at all.