The Humble Voxatron Bundle has recently added Blocks That Matter and The Binding of Isaac to make this a sweet little deal. You can pay what you want for the bundle (which can be divvied between the devs and charity), but to get Blocks That Matter and The Binding of Issac you have to pay the average price ($4.78 at the moment). This is a great way to support indie devs and charity. The bundle is available DRM free, or can be activated on Steam. Get over to humblebundle.com to get yours.
