You may have heard that Canabalt's on sale this weekend as part of the Because We May sale. But if you see something called Canabalt HD on the App Store, don't buy it. It's a fake.
Indie game developers get it: people don't have a lot of money these days. And while they'd love to sell their creations at full price, it's given that a lower-priced offering will get people to try games like Canabalt or World of Goo out and come back to try out even more titles.