Disappointing as our criteria can have many different interpretations, which is why we're seeing so many different games listed here and why everyone is correct for various reasons. We could probably agree on some games if we categorized some of the reasons for our disappointment.
- IJ4 has been listed a lot, but I seem to recall reading that it's a monster earner on route, so maybe it's disappointing to home owners but not operators (if it really is an earner, providing my assumption isn't wrong)
- Some games get bumpy starts and improve. I bought X-Men LE NIB and now loath the game due to what I went through. However, the code ended up improved and now it's a popular game and some folks' favorite game. Likewise, the code roadblocks in T/F (Optimus) and Avengers (B/W Ramp) were fixed far too long after the games were released, which improved those games a little bit, though very late and after much damage was done to the games' fun reputation.
- Some games don't seem to match the theme as well as passionate fans would like. I concur with GoT missing that mark in my mind and 24 not clicking as well. These kinds of games don't give the immersion that rabid fans were hoping for. Maybe expectations were impossible, but it still leads to disappointment for some.
- Then there's the flawed games that are probably beyond rescue for various reasons (code abandoned, WTF questions about game mechanisms, etc), though every game and theme has its fans. WoF, BDK (WTF on that joker canister), WWE, and RS come to mind in this category. I own Tron and love the game, however, the poorly engineered (flawed) GEM shot could have sunk Tron. As it turns out, the outstanding light/sound package and the accidentally difficult GEM shot in an otherwise shallow set of modes somehow combined to make it an awesome game.
- Perhaps a category could be blown expectations or something along those lines and end up in the extremes of being well liked or heavily disliked. SMVE had a disappointing price. GoT was supposedly in development for two years and some people think it missed the mark, despite being apparently fun to play. Some people are disappointed in ST for various reasons, some say chopping wood game play, or redux layout, etc.
Monopoly was also listed a lot, but I haven't played it so I'm not sure where it would fit in the big scheme of things.