If you buy something through this post, IGN may get a share of the sale. For more, read our Terms of Use. It's a good time to be a 2K fan. Green Man Gaming has a massive sale on 2K games right now, from Borderlands to Bioshock, Civilization to Mafia. By "massive" I mean massive savings: not only are these games priced exquisitely low, with discounts of 80 percent in some cases, but add-on content is on sale, too. For example, have you already dropped 1,000+ hours into Civilization VI and want to spice things up a bit?