Haven't played Spiderweb's Avadon: The Black Fortress yet? Want to choose the dollar amount that you pay for it? Then you're in luck, as the latest Humble Bundle package includes Avadon (and five other games) in a convenient compilation that features copies for four separate platforms - Windows, Mac, Linux, and even Android. Avadon can be had at any price, but you'll have to spend at least $1.00 to get a Steam key and at least $6.07 in order to get the side-scroller Swords & Soldiers.