Games that I should not have bought this year (all returned):

Warioware (Wii)
DBZ SB Tenkaichi 2 (Wii)
Def Jam Icons (360)
Blue Dragon (360)

Disappointments that qualify as big:

Lair (PS3)
Blue Dragon (360)

Games that weren't as good as expected:

Stranglehold (PS3/360)
Folklore (PS3)
Metroid Prime 3 (Wii)

Games that were disappointing in scores (I didn't try yet):

Jericho (360/PS3)
Manhunt 2 (Wii)

Those are pretty much all my gaming disappointments for the year.

Overlord
Dragon Quest Swords
Titan Quest: Immortal Throne
Gyakuten Saiban (Phoenix Wright) 4
Hellgate: London
Mythos
ASH -Archaic Sealed Heat
World of Warcraft: The Burning Crusade
Tantei Jingu Terasaburo
Fury

No particular order. No particular platform.

Flagship Studio, responsible for Hellgate and Mythos, was especially a big disappointment. In a way, it's a victim of its own success in the past, Diablo (The studio have some developers and producers of the Diablo series).

What's good about Diablo (randomly-generated modular dungeons, fast-paced hack-n'-slash with interesting items and story, a wide variety of environment and monsters, good skill structure, and dark atmosphere) turned into repetitive dungeons, a mindless clickfest without a shred of tacticality, a poor storyline, a flood of uninteresting "go kill X or fetch it" quests, unattractive poorly-designed items, monotonous modular environment, old and mediocre interface designs ...

Just utter lack of originality, diversity, polish and fun.
It seems real talents still reside in Blizzard.

Untold legends: Darkkingdom (ps3)

Oh FF12. That was diablicle. Maybe something to do with Hironobu going.

Well ... I really dont know ... my biggest dissapontment was probably Halo 2 ... I say recent , because only some time ago I had finally the chance to play the game on the Xbox and the PC in the same day ... I never liked Halo , and many know that , but what they made with Halo 2 for the PC is much worse than a rushed port . Its a rushed port that feels ate least 10 years oder than it should . It was an OK game on the box Imo , but there is no ecscuse for the Pc Version ...

Gears of Wars .... man I waited the PC version ... finally , the only game that I wanted to buy a 360 for , came to the PC . Well , mine couldent handle it well ( 1024*768 on low setting was needed for me for a stabbil framerate ) so I asked a friend to let me install it on his kick-ass PC :P and let me play it .... and he did . The graphics are amazing , story is pretty cool and original to , and afther 30 minutes I was bored of it ... why is that ? I really dont know , but afther ~2 hours I felt the urge to play a bit of UT04 on his PC ...

This are my latest big dissaponments .

PS : From what I was reading in reviews it seams that AC will be one to ...