Trespasser is the kind of failure we need more of. Usually, games just suck because the developers barely tried to make a good game. Here, they tried to make an amazing game and overreached, which is the kind of mistake you can actually learn from. What's sort of cool, actually, is that some of the modern control schemes (I'm looking at that Razer Hydra, but also Move and Wii Motion Plus) seem far more fitted to the game's concept of interaction than the regular 2D mouse interface.
But anyway, this game terrified me when I came out because of the glitches. I played the demo, saw vertices of medium-sized objects stretching across a hundred feet, got speared on the tail of a dead raptor, and my brain could not compensate for the particular kind of reality distortion going on. So while I don't actually have nightmares (never really do), I went to bed with horrible, scary visions of random objects suddenly spearing around across infinity, and this went on for months.
There you go. Trespasser almost turned me legitimately insane.
I'm tempted to play the fully patched version, though. The concepts they were shooting for were just so awesome.