Normally, Valentine's Day provides folks with two options: 1) Gorge yourself on chocolate and somebody else's face, or 2) weep bitterly as everyone else gorges themselves on chocolate and other people's faces. This year, however, you'll have a third avenue for holiday merriment: saving all life as we know it from total annihilation. Or at least, foiling a nefarious Reaper plot or two, via Mass Effect 3's long-awaited demo. According to BioWare, the tantalizing teaser will give players a peek at “the all-out galactic war against an ancient alien race known as the Reapers from multiple fronts, including the mind-blowing opening attack on Earth that kicks off the single-player campaign.” Co-op's in the mix as well, so this is looking like quite the heavyweight as far as demos go. Massive, one might even say. Effectively so. And then, in a just world, they'd hurl themselves out the airlock shortly after.