Valve has slashed 50% off of its zombie survival shooter sequel Left 4 Dead 2, taking the game down to just $25 as part of Steam’s Mid-Week Madness sale.

Even a better deal if you have the bodies (live ones) is the same 50% discount on the L4D2 Four Pack, which already offered a buy three get one free deal. The bundle, normally $150, goes for only $75 during the sale. That means if you had four people put in for the pack, they’d be paying $18.75 for their copy, saving an extra $6.25. That’s a grand total of $31.25 saved.

The sale ends this Thursday, March 25, at 4 PM Pacific.