Newegg cuts up to 80% off select downloadable 2K games for Windows and Mac. (Prices reflect the discount.) Even better, coupon code "EMCPFWE84" cuts an extra 15% off. With prices starting at $2.54 (after coupon), that beats our January mention of up to 83% off with an extra 10% off, making this the best sale we've seen on 2K games from Newegg. Note that a Steam account is required to play these games. A couple of best bets, with prices after coupon:

• Bioshock 2 for PC for $4.25 (low by $12)
• The Bureau w/ XCOM: Enemy Unknown for PC and Mac for $10.19 (pictured, low by $38)