Mailing the story:

If you didn't know anything about it, the Humble Bundle is a series of bundles (....) that contains a variable number of indie games, most of them running natively on linux. The games are always great indie games, but the best thing about it is that you can pay what you want for that bundle, there's no price limit. There have been some great, really great bundles since now, and now here's the new one!