The Humble Voxatron Debut offers just one game. Previous bundles offered more as they aged, but I don't know how this one will work. It's essentially alphafunding a voxel-based platform shooter which has been getting some press.
Decided to get this since it sounded neat. Played some of adventure mode. I really like that everything's made up of cubes and you can cut stuff like walls and trees down, causing them to collapse.