The games in this second Humble Indie Bundle include Braid, Cortex Command, Mechanarium, Osmos, and Revenge of the Titans. The game titles aren't too amazing, but they're all natively available for Linux, Windows, and Mac OS X. Like the first bundle, you can pay however much you want and can select the portion that goes to the developers of these five games and whether any goes to charity (the Electronic Frontier Foundation and Child's Play). There's also no Digital Rights Management bundled with any of these games.
While the Humble Indie Bundle 2 just launched this morning, there's already been $81,8445.28 USD generated as of the time of writing this news article. This is from 12,577 purchases.
It's also not known whether this batch of games will be open-sourced too based upon whether they are successful in generating huge amounts of revenue from these sales where you pay what you want. The Cortex Command and Revenge of the Titans games aren't even finished yet, but updates will be made available for free to the Humble Indie Bundle #2 customers append them becoming available.
Visit HumbleBundle.com to participate. Below is their promotional video for this seven-day sale.