All (minus a handful) of the Linux compatible Steam games I have are from Humble Bundles. I'm skeptical that those unused Steam keys would have much value, giv

All (minus a handful) of the Linux compatible Steam games I have are from Humble Bundles. I'm skeptical that those unused Steam keys would have much value, given routine Steam sales. I've compiled a list of my Humble Bundle games with unredeemed keys (game names only, not the keys themselves) into a spreadsheet for friends.