The latest Humble Weekly Sale wants you to pay whatever you please for three titles from Blendo Games – Atom Zombie Smasher, Flotilla and Air Forte. Cough up a little more than the average to score Thirty Flights of Loving as well. You’ll get soundtracks for three of the games, and you can request Steam keys instead of a DRM-free version if you like. The games are all available on PC and a couple support Mac and Linux, too. As ever, profits are split between charities and participating independent developers.