It's called Intense Silence. The name refers to two things: one, the area in the video game it was written for (an ominous fortress filled with monsters that could attack at any given moment), and two, after the long strings in the opening sequence there are brief periods of absolute silence punctuated by hard guitar and drum hits before the fun really starts. You'll see what I mean.
Of all my compositions, currently about seventy, I've decided this one is my favorite so far. It took several hours to write and another several to humanize and make into a midi suitable for listening, and I can't wait until my guitarist partner can play it so I can mix it down to mp3. I changed time signatures here and there to throw the listener off, make sure they're on their toes. So I hope you enjoy it!
Here's the link.