Today's Steam Holiday Sale discounts Mass Effects, Dead Rising 2 and more

It's another day and you know what that means: more ludicrous Steam deals. Today's highlights include 50% off both Mass Effect and Mass Effect 2, along with reduced prices on Blur, Alpha Protocol, Dead Rising 2 and many more. Hit the jump for the full list.

Steam Holiday Sale: Daily Deals for Dec. 23

This article was originally published on Joystiq.