the worst game not that I played but i actually bought was mario party 8 for wii. It had soo much potential but many of the games were actually designed for the gamecube and ported over to wii. There are some fun aspects of it but not to buy it. I wasted 5o bucks which hurt me deeply.
My personal worst of the year is Call of Juarez (xbox 360) Gameplay was alright, but got extremely repetitive, AI was dumb, sometimes the game bugged out and didn't let me progress, and the multiplayer was unplayable
I don't play many new games so I've only played good games this year. In fact the only games I've played for more than an hour this year (that I remember) are Half-Life 2, Counter-Strike: Source, Battlefield 2/2142, and Team Fortress 2.
I haven't really played to many new games, the only one that was really new was Fable. I will have to say I was disappointed in it, but it wasn't bad. I just thought it would have more depth to it. Oh, well, I didn't buy that one, just borrowed it from a friend.