Humble Bundle offers up to 83 per cent off 2K games

Spec Ops: The Line is free with any purchase
2K Games is offering huge discounts on several of its biggest hits on the Humble Store, with some titles up to 83 per cent off.

Better yet, Spec Ops: The Line comes free with any purchase. So if you snag Sid Meier's Civilization Complete for £0.74 / $1.24, you'll still get Spec Ops with it. Nevermind that this makes purchasing Spec Ops on its own completely redundant.
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Some other highlights include:

BioShock Triple Pack - £7.99 /$11.89
Borderlands: The Pre-Sequel - £14.99 / $29.99
Civilization: Beyond Earth - £14.99 / $24.99
The Darkness 2 - £3.99 / $5.99
The Bureau: XCOM Declassified - £2.99 / $3.99
Borderlands 2: Game of the Year Edition - £4.99 / $7.99
Civilization 5 - £4.99 / $12.49
Evolve - £26.24 / $44.99
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0 per cent of the proceeds from each Humble purchase go to various charities - in this case the American Red Cross, Child's Play, Wikimedia, GamesAid, and charity: water.

The sale lasts until Tuesday 31st March at 6pm UK time. You can browse the entire 2K
full list here https://www.humblebundle.com/store/promo/2k_weekend/