Killzone
It was hyped to be Sony's answer to Halo. I absolutely loved Halo and wanted more so I bought Killzone expecting it to be as good. Not even close. It was the most boring FPS game I have every played.
Spider-Man 3: Invasion of the Spider-Slayers
The first video game system that I bought with my own money was the original Gameboy. One year for Christmas I asked for Spider-Man 3. This was back when you only had the box to learn anything about the game. I loved Spider-Man and there was a cool looking alien monster on the box. It was confusing to play, the controls made no sense, and nothing I did could get me past the second level. Of course I pretended to like it for my parents sake, but I sure wish I had asked for Metroid II or the Spider-Man 1 which I've since heard is a much better game.
