In preparation for the imminent launch of Modern Warfare 2, Activision is running a weekend sale on Steam for the previous installment.
Call of Duty 4: Modern Warfare can be now be had for 40 percent off the usual purchase price, bringing it to a total of $23.99. Not a bad deal if you're one of the few who have yet to play this one. It'll keep you busy until the sequel hits, that's for sure.