There was this one freak bug I encountered in Dead Space: I walked into the room where you first fight the hunter, but Mercer's dialogue didn't trigger. Figuring I'd missed something, I walked back outside...and found myself perpetually falling down a bottomless pit. It was weird.
I also found this one in Alien Swarm where you could glitch into the background scnery, entirely by accident.
I also found this one in Alien Swarm where you could glitch into the background scnery, entirely by accident.