There's still about two days and eighteen hours left for this seven day event where you can pay whatever you want (literally) for a collection of five indie games: Braid, Cortex Command, Machinarium, Osmos, and Revenge of the Titans.
The Humble Indie Bundle #2 is following in the steps of the original bundle that also earned more than a million dollars for its developers and charity combined. After the $1,000,000 USD mark was crossed the first time, they ended up open-sourcing those games.
We do know that there is a surprise planned now that Humble Indie Bundle #2 passed this milestone, but we don't know what it is. The surprise though is expected to come at any moment so we will update accordingly. The fear among the developers is whether this surprise is scalable.
The $1,000,000 in sales for the second bundle are from over 131,000 sales. While Linux game sales account for only about 25% of the revenue (Mac OS X is about the same too with Windows taking the rest), on average the Linux gamer is contributing significantly more money as part of this pay-what-you-want drive.
The Linux user is paying nearly $14 for the bundle while Windows users are paying the least at about six and a half dollars and the Mac OS X gamers are paying about two dollars more than the Microsoft gamers.
If Braid, Cortex Command, Machinarium, Osmos, and Revenge of the Titans don't catch your fancy, you can at least start getting excited for Unigine OilRush, which has been running on Phoronix systems now for several hours today.
With more than sixty hours left to the Humble Indie Bundle #2 sale, what's your revenue target? Perhaps $1.5 million USD? $2M USD if the 'surprise' is good? Let us know in the forums.