These are my top 5 (note that I don't technically "hate" all of them, some are games that just severly underperformed (for me) based on hype and astronomic expectations and recieved really high scores undeservedly, I do strongly dislike all five though):
1: Crysis, this game truly is shit in my opinion. The lofty promises were completely shredded as soon as I sat down and played, the amazing visuals were not there (I found that playing @ 3-4 fps got tiresome) and the gameplay is horribly, horribly tedious. The AI is atrocious, especially for a game that boasts about being so damn advanced and the physics were allencompassing but completely unrealistic (please, feel free to ask for examples). The story is 1980's kind of cheesy and the game is faaaaaar from being sandbox, like everyone claims (again, feel free to ask for examples).
2: F.E.A.R, possibly the most dreary and gray level design ever, almost only in enclosed spaces, even the enemies look gray and boring. The famed AI is nothing but cheap designer tricks (you need to take the elevator, a scripted sequence starts when you're in the middle of the room, sending enemies pouring out of doors and elevators around you and people go; "Oh my what AI! They completely surrounded me!"). The slowdown is not very original and has been done better before (Max Payne, anyone) and this feature makes the game way too easy teamed with the massively underwhelming AI.
Don't even get me started on the "horror" elements in this "scary" game...
3: Bioshock, I was promised a revolution, staggering gameplay elements never before seen, fantastic storytelling and a superb setting which would mesmerize from beginning till end. I got none of the above. Some of the industry's finest SFX and art direction cannot disguise the monotony and imbalance the game contains and the RPG elements I heard about remained nothing but empty words.
4: Motorstorm, having seen and read about this launch title for the PS3, I was very excited, racing being among my favourite genres and games like Colin Mcrae and the underrated Smuggler's Run being among my all time favourite titles, this had to be good! No... it was... boring, the sense of speed is extremely poor, it feels like you'd benefit from leaving the vehicle and proceed on foot at times. The vehicles controlled great but that doesn't help one bit, the tracks were boring and uninspired, the crash cam becomes cheesy and arbitrary (the goal here is not crashing, as in Burnout in certain modes, it only gets in the way). Lastly, the sound was barely there at all and there were no proper weather effects at all.
5: Call of Duty: World at War, by far the weakest in the series, the accolades this has been reaping all over is unfathomable to me. Between the extremely unoriginal settings (there were plenty of action not involving Americans and British in WWII and several things outside of D-Day and the Pacific War actually occurred as well) and the horribly tedious gallery of characters (it speaks volumes when my my reaction at having mates killed was; "Good, one more of those dumb fucks outta my way"...) and the painstaking, overly scripted AI and level design, there isn't much incentive for me to ever finish this game. Not a moment of surprise, nothing new to add to the genre or the series and a feel opf being rushed to the market destroys what semblance on dignity it might initially have had. A truly horrible game in my eyes, co-op and online multi does nothing to alleviate anything for me, having such a drag of a campaign in 2008/2009 in such a presigeous series in plain unforgiveable.