Spending Valentine's Day alone and sulking? Take out your lonely frustrations on hordes of undead this weekend, cheaply, thanks to Valve's weekend deal on Left 4 Dead.

The PC shooter is being marked down 50% this weekend‚ÄĒa limited time offer‚ÄĒto give the lovelorn something to bond with. That translates to a $24.99 copy of Left 4 Dead, in U.S. Dollars. With the free Left 4 Dead "Survival Pack" arriving this Spring, we'd think that's a pretty good deal.

Even if it's not, perhaps spending some time with Zooey will come close to simulating Valentine's Day togetherness.