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

• Risen — $14.99
• Mass Effect 2 Digital Deluxe Edition — $19.99
• Mass Effect 2 — $9.99
• Mass Effect — $9.99
• DeathSpank — $7.49
• Alpha Protocol — $7.50
• Patrician IV — $7.50
• Blood Bowl Legendary Edition — $19.99
• Blur — $14.99
• Silent Hunter: Battle of the Atlantic — $10.19
• Silent Hunter: Wolves of the Pacific — $6.79
• Silent Hunter: Wolves of the Pacific U-Boat Missions pack — $3.39
• Silent Hunter III — $3.39
• Dead Rising 2 — $19.99 ($15.99 if you own Resident Evil 5 through Steam)
• Operation Flashpoint: Dragon Rising — $3
• Darksiders — $10
• Wings of Prey — $6