Necromatic radiation, maybe?
Side effect of crucifying the Son of God? ;)
(I'm not going to touch THAT one with a 20 foot electrified cattle prod.)
"Computer games don't affect kids; I mean if Pac-Man affected us as kids, we'd all be running around in darkened rooms, munching magic pills and listening to repetitive electronic music." -- Kristian Wilson, Nintendo, Inc, 1989