It's Black Friday, and that means that there's a whole heap of games going cheap on the App Store. But because we're so good and kind here at AppSpy, we've trawled through the sales to save you the trouble. Here then, is a curated list of the 20 best games that are on sale right now. They're all bloody excellent, and if you haven't played any of them yet, now's the perfect time because they're going cheap, cheap, cheap. You can click on the emboldened names of the games to download them.