Woof, I actually have a list of these....
Fallout: New Vegas- I just sort of stopped playing it. Other games I wanted to play more came out and I never got the urge to finish it. Also, it kept making my PS3 crash if I played for more than a few hours.
Need for Speed: Hot Pursuit (The remake)- I've never been a huge fan of racing games, but Hot pursuit was always kind of fun for me. Another case of just stopped playing because I moved on to batter games.
Assassin's Creed 3- Yet ANOTHER case of just stopped playing. I think I got past the part where you find out
That the guy you play as for the first hour of the game is actually a Templar.
and sort of just stopped playing.
The Elder Scrolls: Skyrim- I actually like this game a lot, but most of my gaming is on the computer these days, and I have Skyrim for the PS3. I don't buy it for PC because I already have it.
Armored Core V- Just..... Yeah.... It was terrible and I regret buying it. I actually went and played AC: For Answer for a few answers to get the bad taste out of my mouth and rediscovered how much I loved it.
COD: Black Ops 2- I only bought this so my brother and I can play Zombies together. I haven't played the campaign and only a little bit of the multiplayer.
S.T.A.L.K.E.R.: Shadow of Chernobyl- Another case of I just stopped playing.