Here they are -- the additions to the Humble Bundle: PC and Android 7. Broken Sword: Director's Cut, Organ Trail: Director's Cut, Anomaly Korea, and Ticket to Ride's Europe DLC are yours if you beat the average purchase price, currently sitting at just over six bucks.
I do recommend passing that threshold for Organ Trail, which I've only really played a couple times but still recommend. Can you and your companions survive the zombie apocalypse in a station wagon? I sure couldn't. Like, it wasn't even close.
The core set of games are Ticket to Ride, Greed Corp, Incredipede, and Anodyne, in case you missed the original announcement. Pay at least a dollar for Steam keys of those titles.