Humble Indie Bundle 6 just added four new games to its already stellar lineup, available to those who pay more than the average (currently less than $6): Bit.Trip Runner, Wizorb, Jamestown and Gratuitous Space Battles. All four games are DRM-free, of course, and come packaged with soundtracks. They're redeemable via Steam or the Ubuntu Software Center.

These four join Rochard, Shatter, S.P.A.Z., Torchlight, Vessel and Dustforce, the last of which is unlockable by paying more than the average as well. With the new games, Humble Indie Bundle 6 is now worth $135, and as always, buyers can allocate how much of their purchase benefits charity, the developers or Humble Bundle itself. The sixth bundle will be available for seven more days, right here.