couple of things.

first: Star Citizen. Hell I don't think I even bought it just "pledged" to is. so I "bought" the starter pack or whatever it was and...there was nothing to do. fly around, dock, get out, walk around, that's it. I felt like such an idiot because I had read all the crap about, I knew it was a scam, but there was just some perverted curiosity involved.

second: not so much a game but an "accessory": The Sega CD Memory Card. This was from when I was a kid. I was stupid. for my birthday I wanted a Sega CD Memory Card because for some stupid reason I was convinced that it would allow me to save the ENTIRE Sega CD games I rented to the memory card so I could have a bunch of games on the card. I have no idea why I believed this but sure enough for my birthday my parents bought it for me and surprise surprise it did not do what I thought it did. I was instantly disappointed and upset. I think it was because I read in like an EGM that it allowed you to "save your games" and I interpreted that as save the ENTIRE game not just your progress.