I got 2 that I cant decide on. First was GOTG pro. I got it right away and the code was bad. I put it on location and the customers were asking for Transformers that I replaced with it back.
Second was Wonka. Again, got it early and the pooling and chipping started.
I guess in both cases it wasn't because the games were horrible, just bad experience. Nothing is worse then getting a new game and it takes over a year before the code makes it worth playing.