Killing Floor celebrates one million murderers served with midweek sale

How does one celebrate a milestone nowadays? It's been a while since we've had time to celebrate anything, constantly minding our posts in the trenches of hard-nosed games journalism and all. Do you eat a nice meal? Partake in a round of putt-putt?

For Tripwire Interactive, the only way to celebrate is by slashing prices. The studio's co-op survival horror game, Killing Floor, is on sale for $2.99 as a result of recently selling its one millionth copy. Over the last few years, Killing Floor players have racked up 45 million hours of playtime and killed over 500 million enemies. Man, that floor must be getting stickier than a neglected cinema aisle.

You have until Thursday to take advantage of the sale.

This article was originally published on Joystiq.