From the PlanetXbox360.com feature review:
"What exactly is meant by the term "shadow complex"? If this were a college psychiatry lecture, it would probably be a synonym for the fear of the night, noctiphobia. Or it may be the exact opposite and attribute to one's adoration to the love of night life in general. Whatever the case may be, it's fairly certain that after gamers play Chair Entertainment and Epic Games' Shadow Complex, they will run out and profess their love of all things dark to anyone that will listen. That's right; Shadow Complex is the must-have Xbox Live Arcade title of the year that caps-off the brilliant Summer of Arcade promotion sponsored by Microsoft. For those gamers coming in blind to the world of Shadow Complex and know not a single thing about the fantastic side-scroller, here is a short run-down of what the title is all-about."