2K 10th Anniversary Sale: Save up to 87% off on Steam

2K Games is hosting a sale on Steam to celebrate its 10th Anniversary with discounts up yo 87% on offer.
One of the standouts is the 2K 10th Anniversary Bundle which for $49.99 includes:

• Borderlands 2 ($4.99)
• Sid Meier’s Civilization 5 ($7.49)
• XCOM: Enemy Unknown ($7.49)
• BioShock Infinite ($7.49)
• The Bureau: XCOM Declassified ($3.99)
• The Darkness 2 ($5.99)
• Spec Ops: The Line ($5.99)
• Mafia 2 ($7.49)
• Duke Nukem Forever ($6.59)
• Borderlands: Game of the Year ($7.49)
• BioShock 2 ($4.99)
• BioShock ($4.99)
• Sid Meier’s Ace Patrol ($2.49)
• Sid Meier’s Ace Patrol: Pacific Skies ($2.49)
• Sid Meier’s Civilization 4 ($4.99)
• Sid Meier’s Civilization 3 Complete ($1.24)
• Sid Meier’s Pirates! ($2.49)
• Sid Meier’s Railroads! ($2.49)
• Civilization 4: Beyond the Sword ($2.49)
• Civilization 4: Warlords ($1.24)

Each game is on sale individually with pricing noted in parenthesis.
The sale runs through March 23.