Final Fantasy VI. The characters weren't close to being as great as people made them out to be, the game was too easy, the music was average, the story wasn't exciting, the world looked bland and many towns looked the same, the Esper system was a bad customization system, and character individuality was gone from battles once you learned powerful spells.

Final Fantasy XII. Boring characters, boring story, boring world, boring gameplay, boring music. Boring.

Xenogears. The battle system was downright crappy (both on land and in gears), the story tried too hard to make itself look important and intriguing (surprisingly, I liked Disc 2 because of how toned down the presentation was), the main characters weren't likable, the support crew didn't get enough story time, and the music was terrible, save for a few pieces.

Shadow of the Colossus. I like it, but all you really do is fight 15 bosses and explore the world. The story, although simple, and music are exceptionally good on the other hand.