House of the Dead: Overkill? Amazon has got you covered, as Sega's ill-fated yet profitable zombie blaster is the latest Deal of the Day. These babies are priced to move at a mere $20. If you've been hankering for some decent, co-op undead action, you'd be hard-pressed to do much better.
Be warned though. While one would certainly think a zombie shooting spree would be fun for the whole family, Overkill is not for the kids. Turns out there are just a few swear words in there.