The Humble Bundles were both huge hits, ultimately bringing in over $3 million in combined revenue. The smaller games released on Windows, Mac, and Linux platforms, combined with a lack of DRM and the ability to pay whatever you like, created the perfect storm. During his talk at the Game Developers Conference, Jeffrey Rosen even brought up how Ars Technica gave them the nudge needed to finish the first bundle.

"Mike Thompson in particular was one of the few journalists who immediately saw the potential in the Humble Bundle and actually worked hard to write a good article about it, rather than giving me the cold shoulder," Rosen said. "After that, I had no choice but to actually finish coding it—it was getting dangerously close to turning into vaporware!"

The other secret to getting noticed was the support across multiple platforms. "Contributions from Mac and Linux users doubled our revenue for the Humble Indie Bundle," Rosen told Ars after his talk. "Mac and Linux gamers are historically underserved by game developers, so they really appreciate the extra effort, and help you back disproportionately."

Rosen pointed out that Linux users were the most generous in terms of what they were willing to pay for the games. "It is sad that being Windows-exclusive is the norm and it's actually newsworthy when a developer supports another platform," he said.

He also pointed out that customer service was an important part of what the developers did. They had many people, including the developers themselves, sitting at computers, live-chatting with customers to fix their problems, and answering e-mails. You could download your games via a direct link or via bittorrent. If you felt they were doing a good job, you could always go back to the site to increase the amount you paid for the bundle. The Humble Bundle succeeded because the developers decided to be good guys about every aspect of the user experience, hoping people would reward that behavior. As we saw, the gamers certainly did.

There will of course be a third bundle, and Rosen said that he's looking forward to putting fewer "known" games in the bundle to get the word out on titles people may not have heard of, but it's also important to keep the quality of the games high. Until then, he can take a small break knowing that he raised a large amount of money for charity, and found a new way to promote and sell independent games.