It is, as Humble said, a paperbound book containing articles about games from Humble Bundles 1 through 17. No surprises to be found here, though I was taken aback about it having over 700 pages.
I’m not really disappointed in what I got (bathroom reader!) but it arrived dogeared. It was just the book sealed with plastic against a piece of cardboard. I think it would have been better just having the book sealed on its own.