The way they were presented, though, was a masterpiece.
I was in basic training and got a letter from my girlfriend that involved her playing Halo's campaign for the first time on PC. Late night, headphones, no other lights besides the monitor.
She was screaming (silently) "fscking RUN" etc. and other things that would have been priceless to see.
What annoyed me was the areas where they would spawn infinetely. I knew it was neccesary since they are
the 'flood,' but still. And I have to hand it to the Library to make fighting through them seem like quite an ordeal.