Early this morning the Humble Indie Bundle V collection of games broke the four million dollar (USD) barrier with at the time of publishing there being $4,042,013.05 USD in sales from 489.934 purchases. The overall average purchase price is $8.25 while the Windows average is $7.69, Mac OS X average at $9.76, and the Linux average at $12.39. The most anyone has contributed individually has been $9,999.99 from Markus Persson, the Minecraft creator.
While already at the record-setting four million dollar mark, there's still five days left to this sales period. It took just one day to generate two million dollars and a couple days to make three million dollars.
A few of the older Humble Indie Bundle titles were added to the collection of indie games a few days back as a bonus if paying more than the average floating price. This means the total possible collection of games that are DRM-free, pay-what-you-want, multi-platform are Superbrothers: Sword & Sworcery EP, LIMBO, Amnesia: The Dark Descent, Psychonauts, Bastion, Lone Survivor, Braid, and Super Meat Boy. For what it's worth, the soundtracks for some of the games are also included.
For more information or to buy these Linux-compatible games, see this posting.