Can be either MMO(entire game or an expansion), console, just anything that was supposed to be good that you bought and it totally sucked.
1. Diablo 3
I never played D2 becuase I had already started playing MMOs pretty hardcore back then but I heard it was a great game. So when Blizzard said I could get D3 for free with the annual pass I figured what the hell Im not quitting WoW anytime soon and did. Thank God I didnt actually pay for this steaming pile of poo. Made the mistake of picking a monk for my first class at launch and then witch doctor. Wish someone would have told me the only correct class to play at launch was Demon Huter. When I got into Inferno a week after launch it was just impossible. I remember even in a full group we couldnt even beat the 3 hammer trolls at the chapel where the final sword fragment was. The first time I tried The Butcher, again in a full group we quit after 27 wipes. Also the grouping system was terrible as you were forced to only group with other melees as all the Wiz/DHs were loling there way through Acts 3/4 and had no reason to join public games and carry melees.
The game was also impossible to play as a melee becuase of the giant Catch 22 Blizzard thought it would be cute to add. You couldnt beat act 1 unless you had gear from Acts 3/4 which you couldnt afford because you were stuck in Act 1 because you couldnt kill anything to progress without better gear. Also farming for 2months with a MF of 350 and only getting a single item worth 20 mil gold? Yeah brilliant job with the loot tables Blizzard. Thats like going to work and not getting paid. Also when I started there was like 40,000 public games and now theres only 400ish. They sold what like 15 million copies? I doubt theres even 100k people per region still playing. Blizzard definitely laughed all the way to the bank on this game.
2. SW:ToR
Was a huge Star Wars fan so picking this game up was a no brainer. Well obviously I proved I had no brain for buying it. The AH didnt work right for like the first month. 99% of everyone who got the game and had any sort of PvP skill rolled Empire so as a Republic we pretty much got steamrolled in every single PvP match. I thought Alliance was bad but Republic takes the cake. There were days where I would play 20-30 matches and lose every single one of them. Also once you got to 50 the game was impossible to play becauyse BioWare refused to add a cross server LFG system. I guess they decided the best way to make a MMO was to look at other popular and successful MMOs and then refuse to add any elements of those games that made people like them. I loved logging in every day, sitting in fleet for 4 hours doing nothing but spam "Gunslinger LFG" and then log out after getting nothing. Also becuase there was no cross server PvP as well it was again impossible to play after I got off work because you never got into a match from 3-6am. Funny how at the same time range I could log into WoW and be either in a group or PvPing even that early in the morning.
3. Aion
Graphics looked awesome is the only reason I bought it. Never made it past level 30. The grind in Everquest paled in comparrison to this game. Sad too cause I actually liked a lot of the classes. Flying combat sounded like a cool idea on paper but was horrible in game. It gave ranged class such an advantage it was retarded. Obviously all they had to do was sit back and pew pew while meless had to figure out where the hell they were and then if you did manage to find them you were half dead anyways so it didnt matter.