Let me think...
Final Fantasy X: The celestial weapons. WHAT WERE THEY SMOKING?! Alright, I know they're the strongest weapons in the game, but do I have to demean myself and play a retarded butterfly game to get Kimahri's ultimate weapon maxed out? Those butterflies gave me NIGHTMARES and I still didn't get the item I needed. You remember those old commercials? The one for G4 with the butterfly that threatened to open a horrible bag unless you watched G4? I swear that that's the SAME BUTTERFLY! or atleast a close relative.
In Fable 2: I know, cute dog. STOP FOLLOWING ME AROUND! Buried treasure isn't even that valuable! Your combat potential is pathetic! Your tricks are worthless except for pleasing the one dumb idol! And he KEEPS GETTING IN MY WAY!
Also, the lady that orders you around is a total bitch that kills the entire story. I hated her SO BAD! She orders me around, does NO work whatsoever, and then steals all the glory for your accomplishments. For example, she makes you travel to an island to serve as a slave in order to get closer to the big bad, but HELLO! I'm decked out like a human TANK, I can take everyone at the island BY MYSELF, EASY! I don't need to screw around with the namby-pamby sneaking around shit. Plus, at the end of the game, she offers you a choice of what you want to do with a magical wishing machine that gives you one wish, and your choices are: revive your DUMBASS dog (who dies in the most arbitrary and frankly BEST scene in the entire game, if only because the dog dies in it), revive all the people who died making the wish machine (WORTHLESS!, choosing this only gives you 100 good karma, which is a drop in the bucket) , or a 1,000,000 gold (which is completely worthless because of another broken mechanic). Oh, and no matter what you choose, the dumb bitch gets the last laugh because even though YOU are the one that's worked for everything, SHE'S taking all the best rewards, i.e. the most giant and epic tower EVER to live in, and she just kicks your ass out, and there's nothing you can do about it. Oh, also, there's no final boss. Thanks game, thanks for training me this entire retarded game, and then there is literally NO CLIMAX WHATSOEVER! What a letdown! I don't even get to kill the villain, some jerkass npc does. Goddamnit.
Also, just to put icing on the cake, gold turns out to be completely useless because, if you're observant, you'll notice that there are several factors that cause shop prices to fluctuate wildly. One being random discounts/shortages that decrease/increase the price of all items, and another being how much they like you personally. The trick to this though, is that if you get a store owner to like you, they buy and sell everything for less money, the inverse of this is also true, where if you get them to HATE YOU, they BUY and sell everything for MORE. So in other words, you can convince someone to give you TONS of money by getting them to HATE YOUR GUTS. At the end of the game, the weapon stores are selling LUDICROUSLY high priced weapons, but with a little seed money, careful observation of the discount/shortage warnings, and patient socializing, you can run from town to town making MILLIONS of gold. MILLIONS! The end game reward doesn't even COMPARE! I bought every single piece of real estate in the entire game, including the dumb castle, and STILL had far too much gold because of this dumb bug! YOU DON"T KNOW ECONOMICS GAME!
Also, one last thing that pissed me off royally, was that the alchemy shops sell you potions that increase your stats. These potions are BY FAR the most efficient way of gaining ability points, but man, every single time you want to drink one, you have to open up your menu, wait for it to load, go down, select the very specific item category for it, wait for loading. and then manually select it, wait for it to load, where it then exits out of the menu, and I have to repeat the 10 second tedious process all over. I JUST WANT TO DRINK ALL MY POTIONS ALL AT ONCE! PUT THEM INTO A BIG JUG AND SWISH THEM AROUND SO I CAN GUZZLE'EM ALL DOWN IN ONE ACTION! Oh, and the shops only generate so many potions each day, so to get a steady stream you have to buy them out, then go sleep, then go back and buy them out again, repeat ad nuaseum. JUST MAKE MORE THAN ONE A DAY IF DEMAND IS HIGH! YOU DON'T KNOW ECONOMICS!