666 sale, which offers six deals every six hours for six days straight. The 666 sale sports Killing Floor, Star Trek, Guns of Icarus Online, Lucius, Resident Evil 6 and Borderlands 2 (plus the season pass), each for 50 percent to 80 percent off.
The 666 sale includes a bonus offer: a coupon for an extra 10 percent off any game in the sale. Find that code on the right side of the screen, directly above the six games currently on sale. Being bad never felt so cheap.