Dynasty Warriors Gundam, i thought it was gonna be cool gundam and DW crossover but i didnt like it expect for owning everyone with Burning Gundam i hated that game

Probably the crap known as Fuel. That game was awful!!!

prototype, also gundam, gundam is better in portable psp

Resident Evil Survivor

: /

A Crash Bandicoot game! after a while the guy started spinning & walking without that i did sumthin! & it was not the controller x3

The worst game i ever played on PS2 is Spider-man Web Of Shadows. Is 2D .

Does PSP games counts? I'll put Metal Gear: Portable OPS and Armored Core (PSP version)

lol. the PSP ver. of Armored Core really sucks.

enchanted arms and x-blades

my god they were bad, so bad i couldn't bear to complete
I bought them with the intention that they'd be pretty interesting but they sucked so baddddddd!!!!!

my poor money TT^TT

from now on I'm always sticking to awesome games =P (like my all amazing U2, AC2, RE5, MW2, T6 etc.)

Brutal Legend, without a doubt. Absolutely horrible.

With so many PHENOMENAL titles out, like inFamous (the best game I've ever played.. Ever. So much depth to this game.), Ninja Gaiden Sigma, UC2 and the like.. Brutal Legend didn't stand a chance. It was released in the wrong era. It's graphically and game-play wise an EARLY ps2 title. Not a ps3 one. It was downright bad.

PS3 - Conan
PS2 - Final Fantasy XII
PS1 - Toshinden 4
PSP - Assassins Creed Bloodlines

Chicken Little for PS2, for sure. And that's why I don't allow my mother to buy me video-games.
Other than that, Assassin's Creed, actually. I'm glad I didn't buy it for full price, because I found it boring as heck.