For me, it has to be Alien: Colonial Marines as it’s terrible due to inconsistent frame rate (moments the game ran smooth and times where lag was insane, even with the best hardware). Both player & enemy AI is crap since the combat wasn’t even that immersive plus Xenomorph AI isn’t as intimidating due to it being poorly implemented.
Charlies Angels on the Gamecube. I worked at a blockbuster at the time and just used it as a free rental as I was curious. god damn it was by far the worst game I had ever played.
I haven’t played it, but man, that screams “bad game”.